142,991
142,991 is a composite number, odd.
142,991 (one hundred forty-two thousand nine hundred ninety-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 23 × 6,217. Written other ways, in hexadecimal, 0x22E8F.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 648
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 199,241
- Recamán's sequence
- a(222,434) = 142,991
- Square (n²)
- 20,446,426,081
- Cube (n³)
- 2,923,654,911,748,271
- Divisor count
- 4
- σ(n) — sum of divisors
- 149,232
- φ(n) — Euler's totient
- 136,752
- Sum of prime factors
- 6,240
Primality
Prime factorization: 23 × 6217
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,991 = [378; (7, 14, 1, 57, 4, 7, 4, 5, 2, 4, 53, 1, 3, 1, 8, 1, 3, 2, 2, 1, 3, 2, 4, 8, …)]
Representations
- In words
- one hundred forty-two thousand nine hundred ninety-one
- Ordinal
- 142991st
- Binary
- 100010111010001111
- Octal
- 427217
- Hexadecimal
- 0x22E8F
- Base64
- Ai6P
- One's complement
- 4,294,824,304 (32-bit)
- Scientific notation
- 1.42991 × 10⁵
- As a duration
- 142,991 s = 1 day, 15 hours, 43 minutes, 11 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρμβϡϟαʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋩·𝋫
- Chinese
- 一十四萬二千九百九十一
- Chinese (financial)
- 壹拾肆萬貳仟玖佰玖拾壹
Also seen as
UTF-8 encoding: F0 A2 BA 8F (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.46.143.
- Address
- 0.2.46.143
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.46.143
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 142,991 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 142991 first appears in π at position 623,184 of the decimal expansion (the 623,184ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.