142,972
142,972 is a composite number, even.
142,972 (one hundred forty-two thousand nine hundred seventy-two) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 31 × 1,153. Written other ways, in hexadecimal, 0x22E7C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 1,008
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 279,241
- Recamán's sequence
- a(222,472) = 142,972
- Square (n²)
- 20,440,992,784
- Cube (n³)
- 2,922,489,620,314,048
- Divisor count
- 12
- σ(n) — sum of divisors
- 258,496
- φ(n) — Euler's totient
- 69,120
- Sum of prime factors
- 1,188
Primality
Prime factorization: 2 2 × 31 × 1153
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,972 = [378; (8, 1, 1, 2, 4, 1, 2, 1, 68, 94, 1, 1, 16, 1, 2, 5, 1, 10, 8, 1, 1, 188, 1, 1, …)]
Period length 44 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand nine hundred seventy-two
- Ordinal
- 142972nd
- Binary
- 100010111001111100
- Octal
- 427174
- Hexadecimal
- 0x22E7C
- Base64
- Ai58
- One's complement
- 4,294,824,323 (32-bit)
- Scientific notation
- 1.42972 × 10⁵
- As a duration
- 142,972 s = 1 day, 15 hours, 42 minutes, 52 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρμβϡοβʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋨·𝋬
- Chinese
- 一十四萬二千九百七十二
- Chinese (financial)
- 壹拾肆萬貳仟玖佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142972, here are decompositions:
- 3 + 142969 = 142972
- 23 + 142949 = 142972
- 101 + 142871 = 142972
- 131 + 142841 = 142972
- 173 + 142799 = 142972
- 239 + 142733 = 142972
- 353 + 142619 = 142972
- 383 + 142589 = 142972
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B9 BC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.46.124.
- Address
- 0.2.46.124
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.46.124
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 142,972 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.