4,138
4,138 is a composite number, even.
4,138 (four thousand one hundred thirty-eight) is an even 4-digit number. It is a composite number with 4 divisors, and factors as 2 × 2,069. Written other ways, in hexadecimal, 0x102A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 16
- Digit product
- 96
- Digital root
- 7
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 8,314
- Recamán's sequence
- a(28,800) = 4,138
- Square (n²)
- 17,123,044
- Cube (n³)
- 70,855,156,072
- Divisor count
- 4
- σ(n) — sum of divisors
- 6,210
- φ(n) — Euler's totient
- 2,068
- Sum of prime factors
- 2,071
Primality
Prime factorization: 2 × 2069
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√4,138 = [64; (3, 18, 21, 2, 1, 1, 2, 1, 2, 2, 1, 13, 1, 1, 2, 4, 1, 1, 4, 2, 1, 1, 13, 1, …)]
Period length 35 — the block in parentheses repeats forever.
Representations
- In words
- four thousand one hundred thirty-eight
- Ordinal
- 4138th
- Binary
- 1000000101010
- Octal
- 10052
- Hexadecimal
- 0x102A
- Base64
- ECo=
- One's complement
- 61,397 (16-bit)
- Scientific notation
- 4.138 × 10³
- As a duration
- 4,138 s = 1 hour, 8 minutes, 58 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵δρληʹ
- Mayan (base 20)
- 𝋪·𝋦·𝋲
- Chinese
- 四千一百三十八
- Chinese (financial)
- 肆仟壹佰參拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 4,138 = 6
- e — Euler's number (e)
- Digit 4,138 = 4
- φ — Golden ratio (φ)
- Digit 4,138 = 2
- √2 — Pythagoras's (√2)
- Digit 4,138 = 7
- ln 2 — Natural log of 2
- Digit 4,138 = 7
- γ — Euler-Mascheroni (γ)
- Digit 4,138 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 4138, here are decompositions:
- 5 + 4133 = 4138
- 11 + 4127 = 4138
- 47 + 4091 = 4138
- 59 + 4079 = 4138
- 89 + 4049 = 4138
- 131 + 4007 = 4138
- 137 + 4001 = 4138
- 149 + 3989 = 4138
Showing the first eight; more decompositions exist.
UTF-8 encoding: E1 80 AA (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.16.42.
- Address
- 0.0.16.42
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.16.42
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 4,138 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C8 (4186 Hz, -20¢)
- Scientific pitch (C4 = 256 Hz): C8 (4096 Hz, +18¢)
- Baroque pitch (A4 = 415 Hz): C♯8 (4182.9 Hz, -19¢)
The digit sequence 4138 first appears in π at position 1,075 of the decimal expansion (the 1,075ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.