142,740
142,740 is a composite number, even.
142,740 (one hundred forty-two thousand seven hundred forty) is an even 6-digit number. It is a composite number with 72 divisors, and factors as 2² × 3² × 5 × 13 × 61. Its proper divisors sum to 331,188, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22D94.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 47,241
- Recamán's sequence
- a(222,936) = 142,740
- Square (n²)
- 20,374,707,600
- Cube (n³)
- 2,908,285,762,824,000
- Divisor count
- 72
- σ(n) — sum of divisors
- 473,928
- φ(n) — Euler's totient
- 34,560
- Sum of prime factors
- 89
Primality
Prime factorization: 2 2 × 3 2 × 5 × 13 × 61
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,740 = [377; (1, 4, 4, 46, 1, 82, 1, 46, 4, 4, 1, 754)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand seven hundred forty
- Ordinal
- 142740th
- Binary
- 100010110110010100
- Octal
- 426624
- Hexadecimal
- 0x22D94
- Base64
- Ai2U
- One's complement
- 4,294,824,555 (32-bit)
- Scientific notation
- 1.4274 × 10⁵
- As a duration
- 142,740 s = 1 day, 15 hours, 39 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρμβψμʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋱·𝋠
- Chinese
- 一十四萬二千七百四十
- Chinese (financial)
- 壹拾肆萬貳仟柒佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142740, here are decompositions:
- 7 + 142733 = 142740
- 29 + 142711 = 142740
- 41 + 142699 = 142740
- 43 + 142697 = 142740
- 67 + 142673 = 142740
- 83 + 142657 = 142740
- 131 + 142609 = 142740
- 139 + 142601 = 142740
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B6 94 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.148.
- Address
- 0.2.45.148
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.148
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 142,740 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°.