142,742
142,742 is a composite number, even.
142,742 (one hundred forty-two thousand seven hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 149 × 479. Written other ways, in hexadecimal, 0x22D96.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 448
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 247,241
- Recamán's sequence
- a(222,932) = 142,742
- Square (n²)
- 20,375,278,564
- Cube (n³)
- 2,908,408,012,782,488
- Divisor count
- 8
- σ(n) — sum of divisors
- 216,000
- φ(n) — Euler's totient
- 70,744
- Sum of prime factors
- 630
Primality
Prime factorization: 2 × 149 × 479
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,742 = [377; (1, 4, 3, 10, 25, 1, 23, 2, 2, 2, 1, 1, 1, 1, 3, 1, 15, 3, 2, 2, 13, 1, 5, 2, …)]
Representations
- In words
- one hundred forty-two thousand seven hundred forty-two
- Ordinal
- 142742nd
- Binary
- 100010110110010110
- Octal
- 426626
- Hexadecimal
- 0x22D96
- Base64
- Ai2W
- One's complement
- 4,294,824,553 (32-bit)
- Scientific notation
- 1.42742 × 10⁵
- As a duration
- 142,742 s = 1 day, 15 hours, 39 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρμβψμβʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋱·𝋢
- Chinese
- 一十四萬二千七百四十二
- Chinese (financial)
- 壹拾肆萬貳仟柒佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142742, here are decompositions:
- 31 + 142711 = 142742
- 43 + 142699 = 142742
- 151 + 142591 = 142742
- 199 + 142543 = 142742
- 241 + 142501 = 142742
- 373 + 142369 = 142742
- 619 + 142123 = 142742
- 631 + 142111 = 142742
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B6 96 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.150.
- Address
- 0.2.45.150
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.150
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 142,742 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.