40,002
40,002 is a composite number, even.
Properties
Primality
Prime factorization: 2 × 3 × 59 × 113
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty thousand two
- Ordinal
- 40002nd
- Binary
- 1001110001000010
- Octal
- 116102
- Hexadecimal
- 0x9C42
- Base64
- nEI=
- One's complement
- 25,533 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓏺𓏺
- Greek (Milesian)
- ͵μβʹ
- Mayan (base 20)
- 𝋥·𝋠·𝋠·𝋢
- Chinese
- 四萬零二
- Chinese (financial)
- 肆萬零貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 40,002 = 1
- e — Euler's number (e)
- Digit 40,002 = 7
- φ — Golden ratio (φ)
- Digit 40,002 = 9
- √2 — Pythagoras's (√2)
- Digit 40,002 = 4
- ln 2 — Natural log of 2
- Digit 40,002 = 4
- γ — Euler-Mascheroni (γ)
- Digit 40,002 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 40002, here are decompositions:
- 13 + 39989 = 40002
- 19 + 39983 = 40002
- 23 + 39979 = 40002
- 31 + 39971 = 40002
- 73 + 39929 = 40002
- 101 + 39901 = 40002
- 139 + 39863 = 40002
- 163 + 39839 = 40002
Showing the first eight; more decompositions exist.
UTF-8 encoding: E9 B1 82 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.156.66.
- Address
- 0.0.156.66
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.156.66
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 40002 first appears in π at position 38,966 of the decimal expansion (the 38,966ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.