121,138
121,138 is a composite number, even.
121,138 (one hundred twenty-one thousand one hundred thirty-eight) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 37 × 1,637. Written other ways, in hexadecimal, 0x1D932.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 48
- Digital root
- 7
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 831,121
- Square (n²)
- 14,674,415,044
- Cube (n³)
- 1,777,629,289,600,072
- Divisor count
- 8
- σ(n) — sum of divisors
- 186,732
- φ(n) — Euler's totient
- 58,896
- Sum of prime factors
- 1,676
Primality
Prime factorization: 2 × 37 × 1637
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√121,138 = [348; (20, 2, 8, 2, 3, 2, 3, 1, 1, 3, 2, 3, 2, 8, 2, 20, 696)]
Period length 17 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-one thousand one hundred thirty-eight
- Ordinal
- 121138th
- Binary
- 11101100100110010
- Octal
- 354462
- Hexadecimal
- 0x1D932
- Base64
- Adky
- One's complement
- 4,294,846,157 (32-bit)
- Scientific notation
- 1.21138 × 10⁵
- As a duration
- 121,138 s = 1 day, 9 hours, 38 minutes, 58 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκαρληʹ
- Mayan (base 20)
- 𝋯·𝋢·𝋰·𝋲
- Chinese
- 一十二萬一千一百三十八
- Chinese (financial)
- 壹拾貳萬壹仟壹佰參拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 121138, here are decompositions:
- 71 + 121067 = 121138
- 131 + 121007 = 121138
- 137 + 121001 = 121138
- 191 + 120947 = 121138
- 197 + 120941 = 121138
- 239 + 120899 = 121138
- 359 + 120779 = 121138
- 389 + 120749 = 121138
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9D A4 B2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.217.50.
- Address
- 0.1.217.50
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.217.50
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 121,138 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.