142,809
142,809 is a composite number, odd.
142,809 (one hundred forty-two thousand eight hundred nine) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 3 × 181 × 263. Written other ways, in hexadecimal, 0x22DD9.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 908,241
- Recamán's sequence
- a(222,798) = 142,809
- Square (n²)
- 20,394,410,481
- Cube (n³)
- 2,912,505,366,381,129
- Divisor count
- 8
- σ(n) — sum of divisors
- 192,192
- φ(n) — Euler's totient
- 94,320
- Sum of prime factors
- 447
Primality
Prime factorization: 3 × 181 × 263
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,809 = [377; (1, 9, 12, 1, 2, 2, 4, 1, 1, 5, 150, 1, 49, 2, 1, 1, 5, 2, 4, 4, 4, 29, 1, 250, …)]
Period length 48 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand eight hundred nine
- Ordinal
- 142809th
- Binary
- 100010110111011001
- Octal
- 426731
- Hexadecimal
- 0x22DD9
- Base64
- Ai3Z
- One's complement
- 4,294,824,486 (32-bit)
- Scientific notation
- 1.42809 × 10⁵
- As a duration
- 142,809 s = 1 day, 15 hours, 40 minutes, 9 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβωθʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋠·𝋩
- Chinese
- 一十四萬二千八百零九
- Chinese (financial)
- 壹拾肆萬貳仟捌佰零玖
Also seen as
UTF-8 encoding: F0 A2 B7 99 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.217.
- Address
- 0.2.45.217
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.217
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 142,809 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 142809 first appears in π at position 655,425 of the decimal expansion (the 655,425ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.