The name Zaratustra in Hebrew letters is זרטוסטרה. Below: how its number adds up, which page of the Torah it falls on and what verse stands there. Everything is computed, nothing is guessed.
זרטוסטרה
In short
Your name in Hebrew letters is זרטוסטרה. Adding up the numbers of its letters gives 496 — the same as the Torah word צרור, “bundle, pouch”. That number points to Torah page 142 of 354 — in the portion Tetzaveh. What that portion is about: “Command”: oil for the lamp; the priestly garments — the ephod, the breastplate with twelve stones; the consecration of the priests. The verse that begins with the first letter of your name and ends with the last is Exodus 30:13. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Zaratustra” — this exact spelling is what was calculated: זרטוסטרה. A name from the Tanakh — its Tanakh spelling is used. If your name is spelled differently, correct the Hebrew spelling and the report is recomputed.
Adding up the letters of the name זרטוסטרה gives 496.
496
The number 496 is the Torah word צרור — «bundle, pouch» (Genesis 42:35).
And thou shalt make the whole ram smoke upon the altar; it is a burnt-offering unto HaShem; it is a sweet savour, an offering made by fire unto HaShem.
This is from the portion Tetzaveh. What it is about: “Command”: oil for the lamp; the priestly garments — the ephod, the breastplate with twelve stones; the consecration of the priests.
Other ways of counting
The tradition counts the same name in several ways. The main one is above: each letter is its number. The other eight are old and checkable too; each gives its own number, and many of them have a Torah word with the same number.
Final letters as 500–900 (mispar gadol) — 496. A Torah word with the same number is צרור — “bundle, pouch” (Genesis 42:35).
Reduced, each letter to one digit (mispar katan) — 46. A Torah word with the same number is מאה — “hundred” (Genesis 5:3).
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 91. A Torah word with the same number is מלאך — “messenger, angel” (Genesis 16:7).
Cumulative: a letter plus all letters before it (mispar kidmi) — 1999.
Squares of the letter values (mispar perati) — 83872.
Building: the sum grows with each letter (mispar bone’eh) — 2212.
The letters that come out are עגנפחנגצ — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 354. A Torah word with the same number is דשן — “ashes, fatness” (Leviticus 1:16).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 2063.
The number 496 appears in the classical books 37 times across 9 works. The earliest mention is מדרש לפירושים (~1450?).
Every letter of the name explained, the words and namesakes with references, the Hebrew date, the letter and tribe of the month, day 861 of your life (±1), the psalm by age, the attestations from the classical books — a PDF sent to your email.
The number of the day, every morning
Every date has a number too. Once a year it will match the number of your name — 496. The channel posts one number a day, one verse and the Torah page it lands on. Nothing after it, no mailing list.
Hebrew is written from right to left. זרטוסטרה has 8 letters: ז Zayin, ר Resh, ט Tet, ו Vav, ס Samekh, ט Tet, ר Resh, ה He. The first letter is Zayin, the last is He.
For an engraving, a sign or a tattoo, show the spelling to someone who reads Hebrew: transliterating a name is a choice, not the only option.
The name זרטוסטרה does not stand as a word in the Pentateuch — as with most names, including many Tanakh names from the later books.
The verse of your name
There is a custom: at the end of the prayer one says a Torah verse that begins with the first letter of one's name and ends with its last. For זרטוסטרה these are ז and ה. The Pentateuch has 8 such verses. The first of them is Exodus 30:13:
זה יתנו כל העבר על הפקדים מחצית השקל בשקל הקדש עשרים גרה השקל מחצית השקל תרומה לה׳
This is from the portion Ki Tisa. What it is about: The half-shekel for the census; the golden calf and the broken tablets; the thirteen attributes of mercy; the second tablets.
The name זרטוסטרה has no such day. The numbers of the dates in a year cover 326 values out of 940, and 496 is not among them. Half of all names are like this — neither good nor bad, just a fact of counting.
Add a date of birth and the verse of meeting from that week's portion is added to the reading.
Each Hebrew letter has a number; a word's number is their sum (alef 1 … tav 400). The page is the remainder modulo 354: the Torah divided into 354 pages of 861 letters, as the lunar year has 354 days. Everything can be checked by hand.