142,745
142,745 is a composite number, odd.
142,745 (one hundred forty-two thousand seven hundred forty-five) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 5 × 28,549. Written other ways, in hexadecimal, 0x22D99.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 1,120
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 547,241
- Recamán's sequence
- a(222,926) = 142,745
- Square (n²)
- 20,376,135,025
- Cube (n³)
- 2,908,591,394,143,625
- Divisor count
- 4
- σ(n) — sum of divisors
- 171,300
- φ(n) — Euler's totient
- 114,192
- Sum of prime factors
- 28,554
Primality
Prime factorization: 5 × 28549
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,745 = [377; (1, 4, 2, 3, 1, 1, 150, 1, 1, 3, 2, 4, 1, 754)]
Period length 14 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand seven hundred forty-five
- Ordinal
- 142745th
- Binary
- 100010110110011001
- Octal
- 426631
- Hexadecimal
- 0x22D99
- Base64
- Ai2Z
- One's complement
- 4,294,824,550 (32-bit)
- Scientific notation
- 1.42745 × 10⁵
- As a duration
- 142,745 s = 1 day, 15 hours, 39 minutes, 5 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβψμεʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋱·𝋥
- Chinese
- 一十四萬二千七百四十五
- Chinese (financial)
- 壹拾肆萬貳仟柒佰肆拾伍
Also seen as
UTF-8 encoding: F0 A2 B6 99 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.153.
- Address
- 0.2.45.153
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.153
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 142,745 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 142745 first appears in π at position 110,242 of the decimal expansion (the 110,242ordinal-suffix:nd 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.