139,521
139,521 is a composite number, odd.
139,521 (one hundred thirty-nine thousand five hundred twenty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 3 × 46,507. Written other ways, in hexadecimal, 0x22101.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 270
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 125,931
- Recamán's sequence
- a(489,785) = 139,521
- Square (n²)
- 19,466,109,441
- Cube (n³)
- 2,715,931,055,317,761
- Divisor count
- 4
- σ(n) — sum of divisors
- 186,032
- φ(n) — Euler's totient
- 93,012
- Sum of prime factors
- 46,510
Primality
Prime factorization: 3 × 46507
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,521 = [373; (1, 1, 9, 2, 5, 1, 4, 14, 2, 3, 1, 3, 1, 2, 35, 4, 1, 1, 1, 3, 1, 1, 1, 2, …)]
Representations
- In words
- one hundred thirty-nine thousand five hundred twenty-one
- Ordinal
- 139521st
- Binary
- 100010000100000001
- Octal
- 420401
- Hexadecimal
- 0x22101
- Base64
- AiEB
- One's complement
- 4,294,827,774 (32-bit)
- Scientific notation
- 1.39521 × 10⁵
- As a duration
- 139,521 s = 1 day, 14 hours, 45 minutes, 21 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλθφκαʹ
- Mayan (base 20)
- 𝋱·𝋨·𝋰·𝋡
- Chinese
- 一十三萬九千五百二十一
- Chinese (financial)
- 壹拾參萬玖仟伍佰貳拾壹
Also seen as
UTF-8 encoding: F0 A2 84 81 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.33.1.
- Address
- 0.2.33.1
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.33.1
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 139,521 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 139521 first appears in π at position 230,294 of the decimal expansion (the 230,294ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.