142,749
142,749 is a composite number, odd.
142,749 (one hundred forty-two thousand seven hundred forty-nine) is an odd 6-digit number. It is a composite number with 16 divisors, and factors as 3³ × 17 × 311. Written other ways, in hexadecimal, 0x22D9D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 2,016
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 947,241
- Recamán's sequence
- a(222,918) = 142,749
- Square (n²)
- 20,377,277,001
- Cube (n³)
- 2,908,835,914,615,749
- Divisor count
- 16
- σ(n) — sum of divisors
- 224,640
- φ(n) — Euler's totient
- 89,280
- Sum of prime factors
- 337
Primality
Prime factorization: 3 3 × 17 × 311
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,749 = [377; (1, 4, 1, 1, 2, 29, 1, 4, 1, 57, 3, 2, 2, 20, 1, 1, 2, 1, 2, 4, 2, 4, 44, 4, …)]
Period length 46 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand seven hundred forty-nine
- Ordinal
- 142749th
- Binary
- 100010110110011101
- Octal
- 426635
- Hexadecimal
- 0x22D9D
- Base64
- Ai2d
- One's complement
- 4,294,824,546 (32-bit)
- Scientific notation
- 1.42749 × 10⁵
- As a duration
- 142,749 s = 1 day, 15 hours, 39 minutes, 9 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβψμθʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋱·𝋩
- Chinese
- 一十四萬二千七百四十九
- Chinese (financial)
- 壹拾肆萬貳仟柒佰肆拾玖
Also seen as
UTF-8 encoding: F0 A2 B6 9D (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.157.
- Address
- 0.2.45.157
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.157
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 142,749 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.