142,868
142,868 is a composite number, even.
142,868 (one hundred forty-two thousand eight hundred sixty-eight) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2² × 11 × 17 × 191. Its proper divisors sum to 147,436, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22E14.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 29
- Digit product
- 3,072
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 868,241
- Recamán's sequence
- a(222,680) = 142,868
- Square (n²)
- 20,411,265,424
- Cube (n³)
- 2,916,116,668,596,032
- Divisor count
- 24
- σ(n) — sum of divisors
- 290,304
- φ(n) — Euler's totient
- 60,800
- Sum of prime factors
- 223
Primality
Prime factorization: 2 2 × 11 × 17 × 191
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,868 = [377; (1, 46, 4, 46, 1, 754)]
Period length 6 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand eight hundred sixty-eight
- Ordinal
- 142868th
- Binary
- 100010111000010100
- Octal
- 427024
- Hexadecimal
- 0x22E14
- Base64
- Ai4U
- One's complement
- 4,294,824,427 (32-bit)
- Scientific notation
- 1.42868 × 10⁵
- As a duration
- 142,868 s = 1 day, 15 hours, 41 minutes, 8 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβωξηʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋣·𝋨
- Chinese
- 一十四萬二千八百六十八
- Chinese (financial)
- 壹拾肆萬貳仟捌佰陸拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142868, here are decompositions:
- 31 + 142837 = 142868
- 79 + 142789 = 142868
- 97 + 142771 = 142868
- 109 + 142759 = 142868
- 157 + 142711 = 142868
- 211 + 142657 = 142868
- 277 + 142591 = 142868
- 331 + 142537 = 142868
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B8 94 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.46.20.
- Address
- 0.2.46.20
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.46.20
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 142,868 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 142868 first appears in π at position 339,439 of the decimal expansion (the 339,439ordinal-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.