142,800
142,800 is a composite number, even.
142,800 (one hundred forty-two thousand eight hundred) is an even 6-digit number. It is a composite number with 120 divisors, and factors as 2⁴ × 3 × 5² × 7 × 17. Its proper divisors sum to 410,736, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22DD0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 8,241
- Recamán's sequence
- a(222,816) = 142,800
- Square (n²)
- 20,391,840,000
- Cube (n³)
- 2,911,954,752,000,000
- Divisor count
- 120
- σ(n) — sum of divisors
- 553,536
- φ(n) — Euler's totient
- 30,720
- Sum of prime factors
- 45
Primality
Prime factorization: 2 4 × 3 × 5 2 × 7 × 17
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,800 = [377; (1, 7, 1, 754)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand eight hundred
- Ordinal
- 142800th
- Binary
- 100010110111010000
- Octal
- 426720
- Hexadecimal
- 0x22DD0
- Base64
- Ai3Q
- One's complement
- 4,294,824,495 (32-bit)
- Scientific notation
- 1.428 × 10⁵
- As a duration
- 142,800 s = 1 day, 15 hours, 40 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢
- Greek (Milesian)
- ͵ρμβωʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋠·𝋠
- Chinese
- 一十四萬二千八百
- Chinese (financial)
- 壹拾肆萬貳仟捌佰
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142800, here are decompositions:
- 11 + 142789 = 142800
- 13 + 142787 = 142800
- 29 + 142771 = 142800
- 41 + 142759 = 142800
- 43 + 142757 = 142800
- 67 + 142733 = 142800
- 89 + 142711 = 142800
- 101 + 142699 = 142800
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B7 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.208.
- Address
- 0.2.45.208
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.208
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 142,800 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°.