87,042
87,042 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 24,078
- Square (n²)
- 7,576,309,764
- Cube (n³)
- 659,457,154,478,088
- Divisor count
- 16
- σ(n) — sum of divisors
- 177,120
- φ(n) — Euler's totient
- 28,512
- Sum of prime factors
- 257
Primality
Prime factorization: 2 × 3 × 89 × 163
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- eighty-seven thousand forty-two
- Ordinal
- 87042nd
- Binary
- 10101010000000010
- Octal
- 252002
- Hexadecimal
- 0x15402
- Base64
- AVQC
- One's complement
- 4,294,880,253 (32-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹 𒌋 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵πζμβʹ
- Mayan (base 20)
- 𝋪·𝋱·𝋬·𝋢
- Chinese
- 八萬七千零四十二
- Chinese (financial)
- 捌萬柒仟零肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 87,042 = 6
- e — Euler's number (e)
- Digit 87,042 = 6
- φ — Golden ratio (φ)
- Digit 87,042 = 2
- √2 — Pythagoras's (√2)
- Digit 87,042 = 3
- ln 2 — Natural log of 2
- Digit 87,042 = 1
- γ — Euler-Mascheroni (γ)
- Digit 87,042 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 87042, here are decompositions:
- 5 + 87037 = 87042
- 29 + 87013 = 87042
- 31 + 87011 = 87042
- 61 + 86981 = 87042
- 73 + 86969 = 87042
- 83 + 86959 = 87042
- 103 + 86939 = 87042
- 113 + 86929 = 87042
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.84.2.
- Address
- 0.1.84.2
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.84.2
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 87042 first appears in π at position 39,670 of the decimal expansion (the 39,670ordinal-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.