149,021
149,021 is a prime, odd.
149,021 (one hundred forty-nine thousand twenty-one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x2461D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 120,941
- Recamán's sequence
- a(211,090) = 149,021
- Square (n²)
- 22,207,258,441
- Cube (n³)
- 3,309,347,860,136,261
- Divisor count
- 2
- σ(n) — sum of divisors
- 149,022
- φ(n) — Euler's totient
- 149,020
Primality
149,021 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√149,021 = [386; (30, 1, 7, 2, 2, 1, 4, 40, 2, 2, 1, 2, 1, 3, 1, 8, 3, 2, 1, 1, 8, 2, 44, 1, …)]
Representations
- In words
- one hundred forty-nine thousand twenty-one
- Ordinal
- 149021st
- Binary
- 100100011000011101
- Octal
- 443035
- Hexadecimal
- 0x2461D
- Base64
- AkYd
- One's complement
- 4,294,818,274 (32-bit)
- Scientific notation
- 1.49021 × 10⁵
- As a duration
- 149,021 s = 1 day, 17 hours, 23 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρμθκαʹ
- Mayan (base 20)
- 𝋲·𝋬·𝋫·𝋡
- Chinese
- 一十四萬九千零二十一
- Chinese (financial)
- 壹拾肆萬玖仟零貳拾壹
Also seen as
UTF-8 encoding: F0 A4 98 9D (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.70.29.
- Address
- 0.2.70.29
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.70.29
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 149,021 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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.