142,142
142,142 is a composite number, even.
142,142 (one hundred forty-two thousand one hundred forty-two) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 7 × 11 × 13 × 71. Its proper divisors sum to 148,162, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22B3E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 64
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 241,241
- Recamán's sequence
- a(39,596) = 142,142
- Square (n²)
- 20,204,348,164
- Cube (n³)
- 2,871,886,456,727,288
- Divisor count
- 32
- σ(n) — sum of divisors
- 290,304
- φ(n) — Euler's totient
- 50,400
- Sum of prime factors
- 104
Primality
Prime factorization: 2 × 7 × 11 × 13 × 71
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,142 = [377; (58, 754)]
Period length 2 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand one hundred forty-two
- Ordinal
- 142142nd
- Binary
- 100010101100111110
- Octal
- 425476
- Hexadecimal
- 0x22B3E
- Base64
- Ais+
- One's complement
- 4,294,825,153 (32-bit)
- Scientific notation
- 1.42142 × 10⁵
- As a duration
- 142,142 s = 1 day, 15 hours, 29 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρμβρμβʹ
- Mayan (base 20)
- 𝋱·𝋯·𝋧·𝋢
- Chinese
- 一十四萬二千一百四十二
- Chinese (financial)
- 壹拾肆萬貳仟壹佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142142, here are decompositions:
- 19 + 142123 = 142142
- 31 + 142111 = 142142
- 43 + 142099 = 142142
- 103 + 142039 = 142142
- 151 + 141991 = 142142
- 181 + 141961 = 142142
- 211 + 141931 = 142142
- 271 + 141871 = 142142
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 AC BE (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.43.62.
- Address
- 0.2.43.62
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.43.62
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 142,142 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.