138,241
138,241 is a prime, odd.
138,241 (one hundred thirty-eight thousand two hundred forty-one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x21C01.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 192
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 142,831
- Recamán's sequence
- a(492,345) = 138,241
- Square (n²)
- 19,110,574,081
- Cube (n³)
- 2,641,864,871,531,521
- Divisor count
- 2
- σ(n) — sum of divisors
- 138,242
- φ(n) — Euler's totient
- 138,240
Primality
138,241 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,241 = [371; (1, 4, 4, 1, 26, 1, 2, 1, 3, 15, 4, 2, 3, 1, 3, 10, 4, 1, 3, 1, 6, 1, 6, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand two hundred forty-one
- Ordinal
- 138241st
- Binary
- 100001110000000001
- Octal
- 416001
- Hexadecimal
- 0x21C01
- Base64
- AhwB
- One's complement
- 4,294,829,054 (32-bit)
- Scientific notation
- 1.38241 × 10⁵
- As a duration
- 138,241 s = 1 day, 14 hours, 24 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹 𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλησμαʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋬·𝋡
- Chinese
- 一十三萬八千二百四十一
- Chinese (financial)
- 壹拾參萬捌仟貳佰肆拾壹
Also seen as
UTF-8 encoding: F0 A1 B0 81 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.1.
- Address
- 0.2.28.1
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.28.1
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 138,241 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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.