142,942
142,942 is a composite number, even.
142,942 (one hundred forty-two thousand nine hundred forty-two) is an even 6-digit number. It is a composite number with 4 divisors, and factors as 2 × 71,471. Written other ways, in hexadecimal, 0x22E5E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 576
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 249,241
- Recamán's sequence
- a(222,532) = 142,942
- Square (n²)
- 20,432,415,364
- Cube (n³)
- 2,920,650,316,960,888
- Divisor count
- 4
- σ(n) — sum of divisors
- 214,416
- φ(n) — Euler's totient
- 71,470
- Sum of prime factors
- 71,473
Primality
Prime factorization: 2 × 71471
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,942 = [378; (13, 27, 1, 13, 26, 378, 26, 13, 1, 27, 13, 756)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand nine hundred forty-two
- Ordinal
- 142942nd
- Binary
- 100010111001011110
- Octal
- 427136
- Hexadecimal
- 0x22E5E
- Base64
- Ai5e
- One's complement
- 4,294,824,353 (32-bit)
- Scientific notation
- 1.42942 × 10⁵
- As a duration
- 142,942 s = 1 day, 15 hours, 42 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρμβϡμβʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋧·𝋢
- Chinese
- 一十四萬二千九百四十二
- Chinese (financial)
- 壹拾肆萬貳仟玖佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142942, here are decompositions:
- 3 + 142939 = 142942
- 71 + 142871 = 142942
- 101 + 142841 = 142942
- 131 + 142811 = 142942
- 269 + 142673 = 142942
- 353 + 142589 = 142942
- 383 + 142559 = 142942
- 389 + 142553 = 142942
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B9 9E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.46.94.
- Address
- 0.2.46.94
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.46.94
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 142,942 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.