72,142
72,142 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 16
- Digit product
- 112
- Digital root
- 7
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 24,127
- Recamán's sequence
- a(127,315) = 72,142
- Square (n²)
- 5,204,468,164
- Cube (n³)
- 375,460,742,287,288
- Divisor count
- 8
- σ(n) — sum of divisors
- 123,696
- φ(n) — Euler's totient
- 30,912
- Sum of prime factors
- 5,162
Primality
Prime factorization: 2 × 7 × 5153
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- seventy-two thousand one hundred forty-two
- Ordinal
- 72142nd
- Binary
- 10001100111001110
- Octal
- 214716
- Hexadecimal
- 0x119CE
- Base64
- ARnO
- One's complement
- 4,294,895,153 (32-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋 𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵οβρμβʹ
- Mayan (base 20)
- 𝋩·𝋠·𝋧·𝋢
- Chinese
- 七萬二千一百四十二
- Chinese (financial)
- 柒萬貳仟壹佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 72,142 = 7
- e — Euler's number (e)
- Digit 72,142 = 6
- φ — Golden ratio (φ)
- Digit 72,142 = 0
- √2 — Pythagoras's (√2)
- Digit 72,142 = 3
- ln 2 — Natural log of 2
- Digit 72,142 = 7
- γ — Euler-Mascheroni (γ)
- Digit 72,142 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 72142, here are decompositions:
- 3 + 72139 = 72142
- 41 + 72101 = 72142
- 53 + 72089 = 72142
- 89 + 72053 = 72142
- 149 + 71993 = 72142
- 179 + 71963 = 72142
- 233 + 71909 = 72142
- 263 + 71879 = 72142
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 91 A7 8E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.25.206.
- Address
- 0.1.25.206
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.25.206
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 72142 first appears in π at position 89,006 of the decimal expansion (the 89,006ordinal-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.