149,142
149,142 is a composite number, even.
149,142 (one hundred forty-nine thousand one hundred forty-two) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 3 × 7 × 53 × 67. Its proper divisors sum to 203,370, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x24696.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 288
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 241,941
- Recamán's sequence
- a(210,848) = 149,142
- Square (n²)
- 22,243,336,164
- Cube (n³)
- 3,317,415,642,171,288
- Divisor count
- 32
- σ(n) — sum of divisors
- 352,512
- φ(n) — Euler's totient
- 41,184
- Sum of prime factors
- 132
Primality
Prime factorization: 2 × 3 × 7 × 53 × 67
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√149,142 = [386; (5, 3, 2, 5, 1, 5, 1, 1, 5, 1, 19, 2, 11, 4, 1, 1, 1, 6, 1, 1, 1, 4, 11, 2, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-nine thousand one hundred forty-two
- Ordinal
- 149142nd
- Binary
- 100100011010010110
- Octal
- 443226
- Hexadecimal
- 0x24696
- Base64
- AkaW
- One's complement
- 4,294,818,153 (32-bit)
- Scientific notation
- 1.49142 × 10⁵
- As a duration
- 149,142 s = 1 day, 17 hours, 25 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρμθρμβʹ
- Mayan (base 20)
- 𝋲·𝋬·𝋱·𝋢
- Chinese
- 一十四萬九千一百四十二
- Chinese (financial)
- 壹拾肆萬玖仟壹佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 149142, here are decompositions:
- 23 + 149119 = 149142
- 29 + 149113 = 149142
- 31 + 149111 = 149142
- 41 + 149101 = 149142
- 43 + 149099 = 149142
- 73 + 149069 = 149142
- 83 + 149059 = 149142
- 89 + 149053 = 149142
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A4 9A 96 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.70.150.
- Address
- 0.2.70.150
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.70.150
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 149,142 and was likely granted around 1873.
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°.