131,420
131,420 is a composite number, even.
131,420 (one hundred thirty-one thousand four hundred twenty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 6,571. Its proper divisors sum to 144,604, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2015C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 11
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 24,131
- Recamán's sequence
- a(229,532) = 131,420
- Square (n²)
- 17,271,216,400
- Cube (n³)
- 2,269,783,259,288,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 276,024
- φ(n) — Euler's totient
- 52,560
- Sum of prime factors
- 6,580
Primality
Prime factorization: 2 2 × 5 × 6571
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,420 = [362; (1, 1, 12, 1, 2, 6, 1, 5, 7, 1, 3, 1, 12, 6, 1, 1, 2, 1, 8, 1, 4, 1, 1, 1, …)]
Representations
- In words
- one hundred thirty-one thousand four hundred twenty
- Ordinal
- 131420th
- Binary
- 100000000101011100
- Octal
- 400534
- Hexadecimal
- 0x2015C
- Base64
- AgFc
- One's complement
- 4,294,835,875 (32-bit)
- Scientific notation
- 1.3142 × 10⁵
- As a duration
- 131,420 s = 1 day, 12 hours, 30 minutes, 20 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρλαυκʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋫·𝋠
- Chinese
- 一十三萬一千四百二十
- Chinese (financial)
- 壹拾參萬壹仟肆佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131420, here are decompositions:
- 7 + 131413 = 131420
- 103 + 131317 = 131420
- 109 + 131311 = 131420
- 127 + 131293 = 131420
- 199 + 131221 = 131420
- 271 + 131149 = 131420
- 277 + 131143 = 131420
- 307 + 131113 = 131420
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 85 9C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.92.
- Address
- 0.2.1.92
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.92
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 131,420 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 131420 first appears in π at position 131,751 of the decimal expansion (the 131,751ordinal-suffix:st 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.