122,872
122,872 is a composite number, even.
122,872 (one hundred twenty-two thousand eight hundred seventy-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2³ × 15,359. Written other ways, in hexadecimal, 0x1DFF8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 448
- Digital root
- 4
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 278,221
- Square (n²)
- 15,097,528,384
- Cube (n³)
- 1,855,063,507,598,848
- Divisor count
- 8
- σ(n) — sum of divisors
- 230,400
- φ(n) — Euler's totient
- 61,432
- Sum of prime factors
- 15,365
Primality
Prime factorization: 2 3 × 15359
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√122,872 = [350; (1, 1, 7, 1, 1, 3, 1, 4, 1, 1, 1, 9, 11, 41, 6, 1, 2, 1, 1, 8, 12, 2, 2, 16, …)]
Representations
- In words
- one hundred twenty-two thousand eight hundred seventy-two
- Ordinal
- 122872nd
- Binary
- 11101111111111000
- Octal
- 357770
- Hexadecimal
- 0x1DFF8
- Base64
- Ad/4
- One's complement
- 4,294,844,423 (32-bit)
- Scientific notation
- 1.22872 × 10⁵
- As a duration
- 122,872 s = 1 day, 10 hours, 7 minutes, 52 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρκβωοβʹ
- Mayan (base 20)
- 𝋯·𝋧·𝋣·𝋬
- Chinese
- 一十二萬二千八百七十二
- Chinese (financial)
- 壹拾貳萬貳仟捌佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 122872, here are decompositions:
- 3 + 122869 = 122872
- 5 + 122867 = 122872
- 11 + 122861 = 122872
- 23 + 122849 = 122872
- 53 + 122819 = 122872
- 83 + 122789 = 122872
- 131 + 122741 = 122872
- 179 + 122693 = 122872
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.223.248.
- Address
- 0.1.223.248
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.223.248
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 122,872 and was likely granted around 1871.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.