142,808
142,808 is a composite number, even.
142,808 (one hundred forty-two thousand eight hundred eight) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2³ × 17,851. Written other ways, in hexadecimal, 0x22DD8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 808,241
- Recamán's sequence
- a(222,800) = 142,808
- Square (n²)
- 20,394,124,864
- Cube (n³)
- 2,912,444,183,578,112
- Divisor count
- 8
- σ(n) — sum of divisors
- 267,780
- φ(n) — Euler's totient
- 71,400
- Sum of prime factors
- 17,857
Primality
Prime factorization: 2 3 × 17851
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,808 = [377; (1, 8, 1, 17, 1, 1, 6, 1, 4, 1, 2, 4, 2, 1, 13, 1, 5, 2, 2, 1, 1, 2, 32, 2, …)]
Representations
- In words
- one hundred forty-two thousand eight hundred eight
- Ordinal
- 142808th
- Binary
- 100010110111011000
- Octal
- 426730
- Hexadecimal
- 0x22DD8
- Base64
- Ai3Y
- One's complement
- 4,294,824,487 (32-bit)
- Scientific notation
- 1.42808 × 10⁵
- As a duration
- 142,808 s = 1 day, 15 hours, 40 minutes, 8 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβωηʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋠·𝋨
- Chinese
- 一十四萬二千八百零八
- Chinese (financial)
- 壹拾肆萬貳仟捌佰零捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142808, here are decompositions:
- 19 + 142789 = 142808
- 37 + 142771 = 142808
- 97 + 142711 = 142808
- 109 + 142699 = 142808
- 151 + 142657 = 142808
- 199 + 142609 = 142808
- 241 + 142567 = 142808
- 271 + 142537 = 142808
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B7 98 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.216.
- Address
- 0.2.45.216
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.216
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 142,808 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 142808 first appears in π at position 373,914 of the decimal expansion (the 373,914ordinal-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.