142,191
142,191 is a composite number, odd.
142,191 (one hundred forty-two thousand one hundred ninety-one) is an odd 6-digit number. It is a composite number with 24 divisors, and factors as 3² × 7 × 37 × 61. Written other ways, in hexadecimal, 0x22B6F.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 72
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 191,241
- Recamán's sequence
- a(39,694) = 142,191
- Square (n²)
- 20,218,280,481
- Cube (n³)
- 2,874,857,519,873,871
- Divisor count
- 24
- σ(n) — sum of divisors
- 245,024
- φ(n) — Euler's totient
- 77,760
- Sum of prime factors
- 111
Primality
Prime factorization: 3 2 × 7 × 37 × 61
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,191 = [377; (12, 6, 6, 1, 2, 4, 8, 1, 5, 1, 27, 12, 1, 29, 4, 9, 15, 1, 15, 9, 4, 29, 1, 12, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand one hundred ninety-one
- Ordinal
- 142191st
- Binary
- 100010101101101111
- Octal
- 425557
- Hexadecimal
- 0x22B6F
- Base64
- Aitv
- One's complement
- 4,294,825,104 (32-bit)
- Scientific notation
- 1.42191 × 10⁵
- As a duration
- 142,191 s = 1 day, 15 hours, 29 minutes, 51 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρμβρϟαʹ
- Mayan (base 20)
- 𝋱·𝋯·𝋩·𝋫
- Chinese
- 一十四萬二千一百九十一
- Chinese (financial)
- 壹拾肆萬貳仟壹佰玖拾壹
Also seen as
UTF-8 encoding: F0 A2 AD AF (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.43.111.
- Address
- 0.2.43.111
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.43.111
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 142,191 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.