42,129
42,129 is a composite number, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 18
- Digit product
- 144
- Digital root
- 9
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 92,124
- Recamán's sequence
- a(151,365) = 42,129
- Square (n²)
- 1,774,852,641
- Cube (n³)
- 74,772,766,912,689
- Divisor count
- 12
- σ(n) — sum of divisors
- 63,232
- φ(n) — Euler's totient
- 27,000
- Sum of prime factors
- 188
Primality
Prime factorization: 3 2 × 31 × 151
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand one hundred twenty-nine
- Ordinal
- 42129th
- Binary
- 1010010010010001
- Octal
- 122221
- Hexadecimal
- 0xA491
- Base64
- pJE=
- One's complement
- 23,406 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβρκθʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋦·𝋩
- Chinese
- 四萬二千一百二十九
- Chinese (financial)
- 肆萬貳仟壹佰貳拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,129 = 1
- e — Euler's number (e)
- Digit 42,129 = 1
- φ — Golden ratio (φ)
- Digit 42,129 = 3
- √2 — Pythagoras's (√2)
- Digit 42,129 = 3
- ln 2 — Natural log of 2
- Digit 42,129 = 8
- γ — Euler-Mascheroni (γ)
- Digit 42,129 = 7
Also seen as
UTF-8 encoding: EA 92 91 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.145.
- Address
- 0.0.164.145
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.145
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42129 first appears in π at position 122,869 of the decimal expansion (the 122,869ordinal-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.