42,872
42,872 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 23
- Digit product
- 896
- Digital root
- 5
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 27,824
- Recamán's sequence
- a(72,848) = 42,872
- Square (n²)
- 1,838,008,384
- Cube (n³)
- 78,799,095,438,848
- Divisor count
- 16
- σ(n) — sum of divisors
- 84,240
- φ(n) — Euler's totient
- 20,416
- Sum of prime factors
- 262
Primality
Prime factorization: 2 3 × 23 × 233
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand eight hundred seventy-two
- Ordinal
- 42872nd
- Binary
- 1010011101111000
- Octal
- 123570
- Hexadecimal
- 0xA778
- Base64
- p3g=
- One's complement
- 22,663 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵μβωοβʹ
- Mayan (base 20)
- 𝋥·𝋧·𝋣·𝋬
- Chinese
- 四萬二千八百七十二
- Chinese (financial)
- 肆萬貳仟捌佰柒拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,872 = 3
- e — Euler's number (e)
- Digit 42,872 = 4
- φ — Golden ratio (φ)
- Digit 42,872 = 1
- √2 — Pythagoras's (√2)
- Digit 42,872 = 9
- ln 2 — Natural log of 2
- Digit 42,872 = 5
- γ — Euler-Mascheroni (γ)
- Digit 42,872 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42872, here are decompositions:
- 13 + 42859 = 42872
- 19 + 42853 = 42872
- 31 + 42841 = 42872
- 43 + 42829 = 42872
- 79 + 42793 = 42872
- 163 + 42709 = 42872
- 223 + 42649 = 42872
- 229 + 42643 = 42872
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 9D B8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.167.120.
- Address
- 0.0.167.120
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.167.120
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42872 first appears in π at position 242,465 of the decimal expansion (the 242,465ordinal-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.