87,142
87,142 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 22
- Digit product
- 448
- Digital root
- 4
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 24,178
- Square (n²)
- 7,593,728,164
- Cube (n³)
- 661,732,659,667,288
- Divisor count
- 16
- σ(n) — sum of divisors
- 151,632
- φ(n) — Euler's totient
- 37,120
- Sum of prime factors
- 263
Primality
Prime factorization: 2 × 11 × 17 × 233
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- eighty-seven thousand one hundred forty-two
- Ordinal
- 87142nd
- Binary
- 10101010001100110
- Octal
- 252146
- Hexadecimal
- 0x15466
- Base64
- AVRm
- One's complement
- 4,294,880,153 (32-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵πζρμβʹ
- Mayan (base 20)
- 𝋪·𝋱·𝋱·𝋢
- Chinese
- 八萬七千一百四十二
- Chinese (financial)
- 捌萬柒仟壹佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 87,142 = 1
- e — Euler's number (e)
- Digit 87,142 = 4
- φ — Golden ratio (φ)
- Digit 87,142 = 8
- √2 — Pythagoras's (√2)
- Digit 87,142 = 0
- ln 2 — Natural log of 2
- Digit 87,142 = 4
- γ — Euler-Mascheroni (γ)
- Digit 87,142 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 87142, here are decompositions:
- 23 + 87119 = 87142
- 59 + 87083 = 87142
- 71 + 87071 = 87142
- 101 + 87041 = 87142
- 131 + 87011 = 87142
- 149 + 86993 = 87142
- 173 + 86969 = 87142
- 191 + 86951 = 87142
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.84.102.
- Address
- 0.1.84.102
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.84.102
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 87142 first appears in π at position 10,283 of the decimal expansion (the 10,283ordinal-suffix:rd 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.