42,081
42,081 is a composite number, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 18,024
- Recamán's sequence
- a(151,461) = 42,081
- Square (n²)
- 1,770,810,561
- Cube (n³)
- 74,517,479,217,441
- Divisor count
- 12
- σ(n) — sum of divisors
- 61,488
- φ(n) — Euler's totient
- 25,584
- Sum of prime factors
- 112
Primality
Prime factorization: 3 × 13 2 × 83
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand eighty-one
- Ordinal
- 42081st
- Binary
- 1010010001100001
- Octal
- 122141
- Hexadecimal
- 0xA461
- Base64
- pGE=
- One's complement
- 23,454 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵μβπαʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋤·𝋡
- Chinese
- 四萬二千零八十一
- Chinese (financial)
- 肆萬貳仟零捌拾壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,081 = 0
- e — Euler's number (e)
- Digit 42,081 = 4
- φ — Golden ratio (φ)
- Digit 42,081 = 0
- √2 — Pythagoras's (√2)
- Digit 42,081 = 9
- ln 2 — Natural log of 2
- Digit 42,081 = 6
- γ — Euler-Mascheroni (γ)
- Digit 42,081 = 3
Also seen as
UTF-8 encoding: EA 91 A1 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.97.
- Address
- 0.0.164.97
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.97
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42081 first appears in π at position 14,768 of the decimal expansion (the 14,768ordinal-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.