142,880
142,880 is a composite number, even.
142,880 (one hundred forty-two thousand eight hundred eighty) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2⁵ × 5 × 19 × 47. Its proper divisors sum to 220,000, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22E20.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 88,241
- Recamán's sequence
- a(222,656) = 142,880
- Square (n²)
- 20,414,694,400
- Cube (n³)
- 2,916,851,535,872,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 362,880
- φ(n) — Euler's totient
- 52,992
- Sum of prime factors
- 81
Primality
Prime factorization: 2 5 × 5 × 19 × 47
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,880 = [377; (1, 187, 1, 754)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand eight hundred eighty
- Ordinal
- 142880th
- Binary
- 100010111000100000
- Octal
- 427040
- Hexadecimal
- 0x22E20
- Base64
- Ai4g
- One's complement
- 4,294,824,415 (32-bit)
- Scientific notation
- 1.4288 × 10⁵
- As a duration
- 142,880 s = 1 day, 15 hours, 41 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρμβωπʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋤·𝋠
- Chinese
- 一十四萬二千八百八十
- Chinese (financial)
- 壹拾肆萬貳仟捌佰捌拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142880, here are decompositions:
- 7 + 142873 = 142880
- 13 + 142867 = 142880
- 43 + 142837 = 142880
- 109 + 142771 = 142880
- 181 + 142699 = 142880
- 223 + 142657 = 142880
- 271 + 142609 = 142880
- 307 + 142573 = 142880
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B8 A0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.46.32.
- Address
- 0.2.46.32
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.46.32
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 142,880 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.