142,572
142,572 is a composite number, even.
142,572 (one hundred forty-two thousand five hundred seventy-two) is an even 6-digit number. It is a composite number with 18 divisors, and factors as 2² × 3 × 109². Its proper divisors sum to 193,176, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22CEC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 560
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 275,241
- Recamán's sequence
- a(223,272) = 142,572
- Square (n²)
- 20,326,775,184
- Cube (n³)
- 2,898,028,991,533,248
- Divisor count
- 18
- σ(n) — sum of divisors
- 335,748
- φ(n) — Euler's totient
- 47,088
- Sum of prime factors
- 225
Primality
Prime factorization: 2 2 × 3 × 109 2
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,572 = [377; (1, 1, 2, 2, 1, 2, 3, 1, 1, 2, 2, 7, 2, 1, 2, 1, 1, 1, 4, 1, 1, 1, 5, 8, …)]
Representations
- In words
- one hundred forty-two thousand five hundred seventy-two
- Ordinal
- 142572nd
- Binary
- 100010110011101100
- Octal
- 426354
- Hexadecimal
- 0x22CEC
- Base64
- Aizs
- One's complement
- 4,294,824,723 (32-bit)
- Scientific notation
- 1.42572 × 10⁵
- As a duration
- 142,572 s = 1 day, 15 hours, 36 minutes, 12 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρμβφοβʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋨·𝋬
- Chinese
- 一十四萬二千五百七十二
- Chinese (financial)
- 壹拾肆萬貳仟伍佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142572, here are decompositions:
- 5 + 142567 = 142572
- 13 + 142559 = 142572
- 19 + 142553 = 142572
- 29 + 142543 = 142572
- 43 + 142529 = 142572
- 71 + 142501 = 142572
- 103 + 142469 = 142572
- 139 + 142433 = 142572
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B3 AC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.44.236.
- Address
- 0.2.44.236
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.44.236
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 142,572 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 142572 first appears in π at position 245,588 of the decimal expansion (the 245,588ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.