142,521
142,521 is a composite number, odd.
142,521 (one hundred forty-two thousand five hundred twenty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 3 × 47,507. Written other ways, in hexadecimal, 0x22CB9.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 80
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 125,241
- Recamán's sequence
- a(223,374) = 142,521
- Square (n²)
- 20,312,235,441
- Cube (n³)
- 2,894,920,107,286,761
- Divisor count
- 4
- σ(n) — sum of divisors
- 190,032
- φ(n) — Euler's totient
- 95,012
- Sum of prime factors
- 47,510
Primality
Prime factorization: 3 × 47507
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,521 = [377; (1, 1, 12, 3, 2, 1, 2, 1, 1, 3, 9, 1, 1, 9, 31, 2, 1, 4, 2, 6, 1, 7, 3, 1, …)]
Representations
- In words
- one hundred forty-two thousand five hundred twenty-one
- Ordinal
- 142521st
- Binary
- 100010110010111001
- Octal
- 426271
- Hexadecimal
- 0x22CB9
- Base64
- Aiy5
- One's complement
- 4,294,824,774 (32-bit)
- Scientific notation
- 1.42521 × 10⁵
- As a duration
- 142,521 s = 1 day, 15 hours, 35 minutes, 21 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρμβφκαʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋦·𝋡
- Chinese
- 一十四萬二千五百二十一
- Chinese (financial)
- 壹拾肆萬貳仟伍佰貳拾壹
Also seen as
UTF-8 encoding: F0 A2 B2 B9 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.44.185.
- Address
- 0.2.44.185
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.44.185
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 142,521 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 142521 first appears in π at position 485,238 of the decimal expansion (the 485,238ordinal-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°.