138,002
138,002 is a composite number, even.
138,002 (one hundred thirty-eight thousand two) is an even 6-digit number. It is a composite number with 4 divisors, and factors as 2 × 69,001. Written other ways, in hexadecimal, 0x21B12.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 200,831
- Recamán's sequence
- a(492,823) = 138,002
- Square (n²)
- 19,044,552,004
- Cube (n³)
- 2,628,186,265,656,008
- Divisor count
- 4
- σ(n) — sum of divisors
- 207,006
- φ(n) — Euler's totient
- 69,000
- Sum of prime factors
- 69,003
Primality
Prime factorization: 2 × 69001
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,002 = [371; (2, 17, 1, 1, 1, 1, 1, 3, 1, 105, 2, 1, 4, 2, 2, 1, 2, 31, 1, 14, 5, 6, 21, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand two
- Ordinal
- 138002nd
- Binary
- 100001101100010010
- Octal
- 415422
- Hexadecimal
- 0x21B12
- Base64
- AhsS
- One's complement
- 4,294,829,293 (32-bit)
- Scientific notation
- 1.38002 × 10⁵
- As a duration
- 138,002 s = 1 day, 14 hours, 20 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓏺𓏺
- Greek (Milesian)
- ͵ρληβʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋠·𝋢
- Chinese
- 一十三萬八千零二
- Chinese (financial)
- 壹拾參萬捌仟零貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138002, here are decompositions:
- 3 + 137999 = 138002
- 19 + 137983 = 138002
- 61 + 137941 = 138002
- 199 + 137803 = 138002
- 211 + 137791 = 138002
- 349 + 137653 = 138002
- 379 + 137623 = 138002
- 409 + 137593 = 138002
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AC 92 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.18.
- Address
- 0.2.27.18
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.18
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 138,002 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 138002 first appears in π at position 546,928 of the decimal expansion (the 546,928ordinal-suffix:th 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.