121,888
121,888 is a composite number, even.
121,888 (one hundred twenty-one thousand eight hundred eighty-eight) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2⁵ × 13 × 293. Its proper divisors sum to 137,420, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1DC20.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 28
- Digit product
- 1,024
- Digital root
- 1
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 888,121
- Square (n²)
- 14,856,684,544
- Cube (n³)
- 1,810,851,565,699,072
- Divisor count
- 24
- σ(n) — sum of divisors
- 259,308
- φ(n) — Euler's totient
- 56,064
- Sum of prime factors
- 316
Primality
Prime factorization: 2 5 × 13 × 293
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√121,888 = [349; (8, 40, 1, 18, 2, 2, 1, 1, 1, 2, 2, 1, 2, 1, 4, 8, 2, 2, 4, 14, 43, 1, 1, 3, …)]
Representations
- In words
- one hundred twenty-one thousand eight hundred eighty-eight
- Ordinal
- 121888th
- Binary
- 11101110000100000
- Octal
- 356040
- Hexadecimal
- 0x1DC20
- Base64
- Adwg
- One's complement
- 4,294,845,407 (32-bit)
- Scientific notation
- 1.21888 × 10⁵
- As a duration
- 121,888 s = 1 day, 9 hours, 51 minutes, 28 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκαωπηʹ
- Mayan (base 20)
- 𝋯·𝋤·𝋮·𝋨
- Chinese
- 一十二萬一千八百八十八
- Chinese (financial)
- 壹拾貳萬壹仟捌佰捌拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 121888, here are decompositions:
- 5 + 121883 = 121888
- 101 + 121787 = 121888
- 167 + 121721 = 121888
- 191 + 121697 = 121888
- 227 + 121661 = 121888
- 251 + 121637 = 121888
- 257 + 121631 = 121888
- 281 + 121607 = 121888
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.220.32.
- Address
- 0.1.220.32
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.220.32
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 121,888 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.