129,024
129,024 is a composite number, even.
129,024 (one hundred twenty-nine thousand twenty-four) is an even 6-digit number. It is a composite number with 72 divisors, and factors as 2¹¹ × 3² × 7. Its proper divisors sum to 296,856, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1F800.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 420,921
- Recamán's sequence
- a(231,592) = 129,024
- Square (n²)
- 16,647,192,576
- Cube (n³)
- 2,147,887,374,925,824
- Divisor count
- 72
- σ(n) — sum of divisors
- 425,880
- φ(n) — Euler's totient
- 36,864
- Sum of prime factors
- 35
Primality
Prime factorization: 2 11 × 3 2 × 7
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√129,024 = [359; (5, 44, 1, 2, 3, 179, 3, 2, 1, 44, 5, 718)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-nine thousand twenty-four
- Ordinal
- 129024th
- Binary
- 11111100000000000
- Octal
- 374000
- Hexadecimal
- 0x1F800
- Base64
- AfgA
- One's complement
- 4,294,838,271 (32-bit)
- Scientific notation
- 1.29024 × 10⁵
- As a duration
- 129,024 s = 1 day, 11 hours, 50 minutes, 24 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκθκδʹ
- Mayan (base 20)
- 𝋰·𝋢·𝋫·𝋤
- Chinese
- 一十二萬九千零二十四
- Chinese (financial)
- 壹拾貳萬玖仟零貳拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 129024, here are decompositions:
- 13 + 129011 = 129024
- 23 + 129001 = 129024
- 31 + 128993 = 129024
- 37 + 128987 = 129024
- 41 + 128983 = 129024
- 43 + 128981 = 129024
- 53 + 128971 = 129024
- 73 + 128951 = 129024
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9F A0 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.248.0.
- Address
- 0.1.248.0
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.248.0
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 129,024 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.