149,420
149,420 is a composite number, even.
149,420 (one hundred forty-nine thousand four hundred twenty) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2² × 5 × 31 × 241. Its proper divisors sum to 175,828, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x247AC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 24,941
- Square (n²)
- 22,326,336,400
- Cube (n³)
- 3,336,001,184,888,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 325,248
- φ(n) — Euler's totient
- 57,600
- Sum of prime factors
- 281
Primality
Prime factorization: 2 2 × 5 × 31 × 241
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√149,420 = [386; (1, 1, 4, 1, 1, 1, 1, 1, 2, 4, 3, 154, 3, 4, 2, 1, 1, 1, 1, 1, 4, 1, 1, 772)]
Period length 24 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-nine thousand four hundred twenty
- Ordinal
- 149420th
- Binary
- 100100011110101100
- Octal
- 443654
- Hexadecimal
- 0x247AC
- Base64
- Akes
- One's complement
- 4,294,817,875 (32-bit)
- Scientific notation
- 1.4942 × 10⁵
- As a duration
- 149,420 s = 1 day, 17 hours, 30 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒌋 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρμθυκʹ
- Mayan (base 20)
- 𝋲·𝋭·𝋫·𝋠
- Chinese
- 一十四萬九千四百二十
- Chinese (financial)
- 壹拾肆萬玖仟肆佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 149420, here are decompositions:
- 3 + 149417 = 149420
- 43 + 149377 = 149420
- 79 + 149341 = 149420
- 97 + 149323 = 149420
- 151 + 149269 = 149420
- 163 + 149257 = 149420
- 181 + 149239 = 149420
- 223 + 149197 = 149420
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A4 9E AC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.71.172.
- Address
- 0.2.71.172
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.71.172
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 149,420 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.