138,121
138,121 is a composite number, odd.
138,121 (one hundred thirty-eight thousand one hundred twenty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 37 × 3,733. Written other ways, in hexadecimal, 0x21B89.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 48
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 121,831
- Recamán's sequence
- a(492,585) = 138,121
- Square (n²)
- 19,077,410,641
- Cube (n³)
- 2,634,991,035,145,561
- Divisor count
- 4
- σ(n) — sum of divisors
- 141,892
- φ(n) — Euler's totient
- 134,352
- Sum of prime factors
- 3,770
Primality
Prime factorization: 37 × 3733
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,121 = [371; (1, 1, 1, 4, 1, 3, 1, 34, 1, 1, 1, 1, 17, 1, 1, 8, 2, 3, 1, 3, 2, 4, 4, 1, …)]
Period length 51 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand one hundred twenty-one
- Ordinal
- 138121st
- Binary
- 100001101110001001
- Octal
- 415611
- Hexadecimal
- 0x21B89
- Base64
- AhuJ
- One's complement
- 4,294,829,174 (32-bit)
- Scientific notation
- 1.38121 × 10⁵
- As a duration
- 138,121 s = 1 day, 14 hours, 22 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρληρκαʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋦·𝋡
- Chinese
- 一十三萬八千一百二十一
- Chinese (financial)
- 壹拾參萬捌仟壹佰貳拾壹
Also seen as
UTF-8 encoding: F0 A1 AE 89 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.137.
- Address
- 0.2.27.137
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.137
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 138,121 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 138121 first appears in π at position 340,132 of the decimal expansion (the 340,132ordinal-suffix:nd digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.