129,164
129,164 is a composite number, even.
129,164 (one hundred twenty-nine thousand one hundred sixty-four) is an even 6-digit number. It is a composite number with 18 divisors, and factors as 2² × 7² × 659. Its proper divisors sum to 134,176, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1F88C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 432
- Digital root
- 5
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 461,921
- Recamán's sequence
- a(231,312) = 129,164
- Square (n²)
- 16,683,338,896
- Cube (n³)
- 2,154,886,785,162,944
- Divisor count
- 18
- σ(n) — sum of divisors
- 263,340
- φ(n) — Euler's totient
- 55,272
- Sum of prime factors
- 677
Primality
Prime factorization: 2 2 × 7 2 × 659
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√129,164 = [359; (2, 1, 1, 5, 1, 178, 1, 5, 1, 1, 2, 718)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-nine thousand one hundred sixty-four
- Ordinal
- 129164th
- Binary
- 11111100010001100
- Octal
- 374214
- Hexadecimal
- 0x1F88C
- Base64
- AfiM
- One's complement
- 4,294,838,131 (32-bit)
- Scientific notation
- 1.29164 × 10⁵
- As a duration
- 129,164 s = 1 day, 11 hours, 52 minutes, 44 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκθρξδʹ
- Mayan (base 20)
- 𝋰·𝋢·𝋲·𝋤
- Chinese
- 一十二萬九千一百六十四
- Chinese (financial)
- 壹拾貳萬玖仟壹佰陸拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 129164, here are decompositions:
- 37 + 129127 = 129164
- 43 + 129121 = 129164
- 67 + 129097 = 129164
- 103 + 129061 = 129164
- 127 + 129037 = 129164
- 163 + 129001 = 129164
- 181 + 128983 = 129164
- 193 + 128971 = 129164
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.248.140.
- Address
- 0.1.248.140
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.248.140
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 129,164 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 129164 first appears in π at position 953,860 of the decimal expansion (the 953,860ordinal-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.