137,921
137,921 is a composite number, odd.
137,921 (one hundred thirty-seven thousand nine hundred twenty-one) is an odd 6-digit number. It is a composite number with 16 divisors, and factors as 7 × 17 × 19 × 61. Written other ways, in hexadecimal, 0x21AC1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 378
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 129,731
- Recamán's sequence
- a(492,985) = 137,921
- Square (n²)
- 19,022,202,241
- Cube (n³)
- 2,623,561,155,280,961
- Divisor count
- 16
- σ(n) — sum of divisors
- 178,560
- φ(n) — Euler's totient
- 103,680
- Sum of prime factors
- 104
Primality
Prime factorization: 7 × 17 × 19 × 61
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√137,921 = [371; (2, 1, 1, 1, 6, 1, 1, 2, 2, 2, 56, 1, 2, 1, 1, 2, 3, 29, 2, 2, 2, 3, 1, 45, …)]
Representations
- In words
- one hundred thirty-seven thousand nine hundred twenty-one
- Ordinal
- 137921st
- Binary
- 100001101011000001
- Octal
- 415301
- Hexadecimal
- 0x21AC1
- Base64
- AhrB
- One's complement
- 4,294,829,374 (32-bit)
- Scientific notation
- 1.37921 × 10⁵
- As a duration
- 137,921 s = 1 day, 14 hours, 18 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλζϡκαʹ
- Mayan (base 20)
- 𝋱·𝋤·𝋰·𝋡
- Chinese
- 一十三萬七千九百二十一
- Chinese (financial)
- 壹拾參萬柒仟玖佰貳拾壹
Also seen as
UTF-8 encoding: F0 A1 AB 81 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.26.193.
- Address
- 0.2.26.193
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.26.193
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 137,921 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 137921 first appears in π at position 542,848 of the decimal expansion (the 542,848ordinal-suffix:th 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.