142,520
142,520 is a composite number, even.
142,520 (one hundred forty-two thousand five hundred twenty) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2³ × 5 × 7 × 509. Its proper divisors sum to 224,680, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22CB8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 25,241
- Recamán's sequence
- a(223,376) = 142,520
- Square (n²)
- 20,311,950,400
- Cube (n³)
- 2,894,859,171,008,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 367,200
- φ(n) — Euler's totient
- 48,768
- Sum of prime factors
- 527
Primality
Prime factorization: 2 3 × 5 × 7 × 509
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,520 = [377; (1, 1, 13, 4, 2, 1, 1, 5, 1, 1, 1, 5, 1, 1, 2, 4, 13, 1, 1, 754)]
Period length 20 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand five hundred twenty
- Ordinal
- 142520th
- Binary
- 100010110010111000
- Octal
- 426270
- Hexadecimal
- 0x22CB8
- Base64
- Aiy4
- One's complement
- 4,294,824,775 (32-bit)
- Scientific notation
- 1.4252 × 10⁵
- As a duration
- 142,520 s = 1 day, 15 hours, 35 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρμβφκʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋦·𝋠
- Chinese
- 一十四萬二千五百二十
- Chinese (financial)
- 壹拾肆萬貳仟伍佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142520, here are decompositions:
- 19 + 142501 = 142520
- 67 + 142453 = 142520
- 139 + 142381 = 142520
- 151 + 142369 = 142520
- 163 + 142357 = 142520
- 193 + 142327 = 142520
- 223 + 142297 = 142520
- 283 + 142237 = 142520
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B2 B8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.44.184.
- Address
- 0.2.44.184
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.44.184
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 142,520 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 142520 first appears in π at position 753,589 of the decimal expansion (the 753,589ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.