149,642
149,642 is a composite number, even.
149,642 (one hundred forty-nine thousand six hundred forty-two) is an even 6-digit number. It is a composite number with 4 divisors, and factors as 2 × 74,821. Written other ways, in hexadecimal, 0x2488A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 1,728
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 246,941
- Recamán's sequence
- a(44,144) = 149,642
- Square (n²)
- 22,392,728,164
- Cube (n³)
- 3,350,892,627,917,288
- Divisor count
- 4
- σ(n) — sum of divisors
- 224,466
- φ(n) — Euler's totient
- 74,820
- Sum of prime factors
- 74,823
Primality
Prime factorization: 2 × 74821
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√149,642 = [386; (1, 5, 10, 1, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 32, 1, 9, 1, 1, 1, 2, 5, …)]
Representations
- In words
- one hundred forty-nine thousand six hundred forty-two
- Ordinal
- 149642nd
- Binary
- 100100100010001010
- Octal
- 444212
- Hexadecimal
- 0x2488A
- Base64
- AkiK
- One's complement
- 4,294,817,653 (32-bit)
- Scientific notation
- 1.49642 × 10⁵
- As a duration
- 149,642 s = 1 day, 17 hours, 34 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρμθχμβʹ
- Mayan (base 20)
- 𝋲·𝋮·𝋢·𝋢
- Chinese
- 一十四萬九千六百四十二
- Chinese (financial)
- 壹拾肆萬玖仟陸佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 149642, here are decompositions:
- 13 + 149629 = 149642
- 19 + 149623 = 149642
- 79 + 149563 = 149642
- 109 + 149533 = 149642
- 139 + 149503 = 149642
- 151 + 149491 = 149642
- 223 + 149419 = 149642
- 271 + 149371 = 149642
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A4 A2 8A (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.72.138.
- Address
- 0.2.72.138
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.72.138
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 149,642 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.