142,042
142,042 is a composite number, even.
142,042 (one hundred forty-two thousand forty-two) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 29 × 31 × 79. Written other ways, in hexadecimal, 0x22ADA.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 240,241
- Recamán's sequence
- a(484,743) = 142,042
- Square (n²)
- 20,175,929,764
- Cube (n³)
- 2,865,829,415,538,088
- Divisor count
- 16
- σ(n) — sum of divisors
- 230,400
- φ(n) — Euler's totient
- 65,520
- Sum of prime factors
- 141
Primality
Prime factorization: 2 × 29 × 31 × 79
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,042 = [376; (1, 7, 1, 1, 1, 83, 10, 5, 1, 2, 1, 8, 1, 1, 3, 3, 1, 5, 13, 19, 1, 3, 5, 1, …)]
Representations
- In words
- one hundred forty-two thousand forty-two
- Ordinal
- 142042nd
- Binary
- 100010101011011010
- Octal
- 425332
- Hexadecimal
- 0x22ADA
- Base64
- Aira
- One's complement
- 4,294,825,253 (32-bit)
- Scientific notation
- 1.42042 × 10⁵
- As a duration
- 142,042 s = 1 day, 15 hours, 27 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρμβμβʹ
- Mayan (base 20)
- 𝋱·𝋯·𝋢·𝋢
- Chinese
- 一十四萬二千零四十二
- Chinese (financial)
- 壹拾肆萬貳仟零肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142042, here are decompositions:
- 3 + 142039 = 142042
- 11 + 142031 = 142042
- 23 + 142019 = 142042
- 71 + 141971 = 142042
- 83 + 141959 = 142042
- 101 + 141941 = 142042
- 179 + 141863 = 142042
- 191 + 141851 = 142042
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 AB 9A (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.42.218.
- Address
- 0.2.42.218
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.42.218
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 142,042 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.