142,688
142,688 is a composite number, even.
142,688 (one hundred forty-two thousand six hundred eighty-eight) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2⁵ × 7³ × 13. Its proper divisors sum to 210,112, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22D60.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 29
- Digit product
- 3,072
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 886,241
- Recamán's sequence
- a(223,040) = 142,688
- Square (n²)
- 20,359,865,344
- Cube (n³)
- 2,905,108,466,204,672
- Divisor count
- 48
- σ(n) — sum of divisors
- 352,800
- φ(n) — Euler's totient
- 56,448
- Sum of prime factors
- 44
Primality
Prime factorization: 2 5 × 7 3 × 13
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,688 = [377; (1, 2, 1, 5, 1, 14, 1, 1, 3, 3, 1, 1, 3, 15, 7, 3, 1, 2, 2, 14, 1, 187, 1, 14, …)]
Period length 44 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand six hundred eighty-eight
- Ordinal
- 142688th
- Binary
- 100010110101100000
- Octal
- 426540
- Hexadecimal
- 0x22D60
- Base64
- Ai1g
- One's complement
- 4,294,824,607 (32-bit)
- Scientific notation
- 1.42688 × 10⁵
- As a duration
- 142,688 s = 1 day, 15 hours, 38 minutes, 8 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβχπηʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋮·𝋨
- Chinese
- 一十四萬二千六百八十八
- Chinese (financial)
- 壹拾肆萬貳仟陸佰捌拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142688, here are decompositions:
- 31 + 142657 = 142688
- 79 + 142609 = 142688
- 97 + 142591 = 142688
- 151 + 142537 = 142688
- 307 + 142381 = 142688
- 331 + 142357 = 142688
- 457 + 142231 = 142688
- 499 + 142189 = 142688
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B5 A0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.96.
- Address
- 0.2.45.96
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.96
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 142,688 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.