138,140
138,140 is a composite number, even.
138,140 (one hundred thirty-eight thousand one hundred forty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 6,907. Its proper divisors sum to 151,996, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21B9C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 41,831
- Recamán's sequence
- a(492,547) = 138,140
- Square (n²)
- 19,082,659,600
- Cube (n³)
- 2,636,078,597,144,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 290,136
- φ(n) — Euler's totient
- 55,248
- Sum of prime factors
- 6,916
Primality
Prime factorization: 2 2 × 5 × 6907
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,140 = [371; (1, 2, 20, 1, 9, 1, 1, 14, 1, 1, 1, 4, 1, 4, 6, 25, 2, 8, 3, 1, 11, 1, 5, 3, …)]
Representations
- In words
- one hundred thirty-eight thousand one hundred forty
- Ordinal
- 138140th
- Binary
- 100001101110011100
- Octal
- 415634
- Hexadecimal
- 0x21B9C
- Base64
- Ahuc
- One's complement
- 4,294,829,155 (32-bit)
- Scientific notation
- 1.3814 × 10⁵
- As a duration
- 138,140 s = 1 day, 14 hours, 22 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρληρμʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋧·𝋠
- Chinese
- 一十三萬八千一百四十
- Chinese (financial)
- 壹拾參萬捌仟壹佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138140, here are decompositions:
- 61 + 138079 = 138140
- 157 + 137983 = 138140
- 193 + 137947 = 138140
- 199 + 137941 = 138140
- 229 + 137911 = 138140
- 271 + 137869 = 138140
- 313 + 137827 = 138140
- 337 + 137803 = 138140
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AE 9C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.156.
- Address
- 0.2.27.156
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.156
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 138,140 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 138140 first appears in π at position 877,353 of the decimal expansion (the 877,353ordinal-suffix:rd digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.