121,488
121,488 is a composite number, even.
121,488 (one hundred twenty-one thousand four hundred eighty-eight) is an even 6-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 3 × 2,531. Its proper divisors sum to 192,480, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1DA90.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 512
- Digital root
- 6
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 884,121
- Square (n²)
- 14,759,334,144
- Cube (n³)
- 1,793,081,986,486,272
- Divisor count
- 20
- σ(n) — sum of divisors
- 313,968
- φ(n) — Euler's totient
- 40,480
- Sum of prime factors
- 2,542
Primality
Prime factorization: 2 4 × 3 × 2531
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√121,488 = [348; (1, 1, 4, 2, 1, 2, 29, 1, 14, 1, 7, 13, 3, 1, 1, 2, 1, 8, 1, 4, 1, 6, 2, 1, …)]
Period length 60 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-one thousand four hundred eighty-eight
- Ordinal
- 121488th
- Binary
- 11101101010010000
- Octal
- 355220
- Hexadecimal
- 0x1DA90
- Base64
- AdqQ
- One's complement
- 4,294,845,807 (32-bit)
- Scientific notation
- 1.21488 × 10⁵
- As a duration
- 121,488 s = 1 day, 9 hours, 44 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκαυπηʹ
- Mayan (base 20)
- 𝋯·𝋣·𝋮·𝋨
- Chinese
- 一十二萬一千四百八十八
- Chinese (financial)
- 壹拾貳萬壹仟肆佰捌拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 121488, here are decompositions:
- 19 + 121469 = 121488
- 41 + 121447 = 121488
- 47 + 121441 = 121488
- 67 + 121421 = 121488
- 109 + 121379 = 121488
- 131 + 121357 = 121488
- 137 + 121351 = 121488
- 139 + 121349 = 121488
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.218.144.
- Address
- 0.1.218.144
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.218.144
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 121,488 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.