131,242
131,242 is a composite number, even.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 13
- Digit product
- 48
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 242,131
- Square (n²)
- 17,224,462,564
- Cube (n³)
- 2,260,572,915,824,488
- Divisor count
- 8
- σ(n) — sum of divisors
- 198,432
- φ(n) — Euler's totient
- 65,100
- Sum of prime factors
- 524
Primality
Prime factorization: 2 × 211 × 311
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,242 = [362; (3, 1, 1, 1, 12, 13, 2, 1, 21, 3, 1, 1, 3, 1, 3, 3, 4, 1, 16, 1, 6, 6, 3, 1, …)]
Representations
- In words
- one hundred thirty-one thousand two hundred forty-two
- Ordinal
- 131242nd
- Binary
- 100000000010101010
- Octal
- 400252
- Hexadecimal
- 0x200AA
- Base64
- AgCq
- One's complement
- 4,294,836,053 (32-bit)
- Scientific notation
- 1.31242 × 10⁵
- As a duration
- 131,242 s = 1 day, 12 hours, 27 minutes, 22 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλασμβʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋢·𝋢
- Chinese
- 一十三萬一千二百四十二
- Chinese (financial)
- 壹拾參萬壹仟貳佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131242, here are decompositions:
- 11 + 131231 = 131242
- 29 + 131213 = 131242
- 71 + 131171 = 131242
- 113 + 131129 = 131242
- 131 + 131111 = 131242
- 179 + 131063 = 131242
- 233 + 131009 = 131242
- 269 + 130973 = 131242
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 82 AA (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.0.170.
- Address
- 0.2.0.170
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.0.170
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 131,242 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.