138,026
138,026 is a composite number, even.
138,026 (one hundred thirty-eight thousand twenty-six) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 7 × 9,859. Written other ways, in hexadecimal, 0x21B2A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 620,831
- Recamán's sequence
- a(492,775) = 138,026
- Square (n²)
- 19,051,176,676
- Cube (n³)
- 2,629,557,711,881,576
- Divisor count
- 8
- σ(n) — sum of divisors
- 236,640
- φ(n) — Euler's totient
- 59,148
- Sum of prime factors
- 9,868
Primality
Prime factorization: 2 × 7 × 9859
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,026 = [371; (1, 1, 13, 106, 13, 1, 1, 742)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand twenty-six
- Ordinal
- 138026th
- Binary
- 100001101100101010
- Octal
- 415452
- Hexadecimal
- 0x21B2A
- Base64
- Ahsq
- One's complement
- 4,294,829,269 (32-bit)
- Scientific notation
- 1.38026 × 10⁵
- As a duration
- 138,026 s = 1 day, 14 hours, 20 minutes, 26 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληκϛʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋡·𝋦
- Chinese
- 一十三萬八千零二十六
- Chinese (financial)
- 壹拾參萬捌仟零貳拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138026, here are decompositions:
- 19 + 138007 = 138026
- 43 + 137983 = 138026
- 79 + 137947 = 138026
- 157 + 137869 = 138026
- 199 + 137827 = 138026
- 223 + 137803 = 138026
- 283 + 137743 = 138026
- 313 + 137713 = 138026
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AC AA (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.42.
- Address
- 0.2.27.42
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.42
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 138,026 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.