102,442
102,442 is a composite number, even.
102,442 (one hundred two thousand four hundred forty-two) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 17 × 23 × 131. Written other ways, in hexadecimal, 0x1902A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 244,201
- Recamán's sequence
- a(39,803) = 102,442
- Square (n²)
- 10,494,363,364
- Cube (n³)
- 1,075,063,571,734,888
- Divisor count
- 16
- σ(n) — sum of divisors
- 171,072
- φ(n) — Euler's totient
- 45,760
- Sum of prime factors
- 173
Primality
Prime factorization: 2 × 17 × 23 × 131
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√102,442 = [320; (15, 4, 5, 1, 3, 1, 4, 1, 36, 1, 4, 1, 3, 1, 5, 4, 15, 640)]
Period length 18 — the block in parentheses repeats forever.
Representations
- In words
- one hundred two thousand four hundred forty-two
- Ordinal
- 102442nd
- Binary
- 11001000000101010
- Octal
- 310052
- Hexadecimal
- 0x1902A
- Base64
- AZAq
- One's complement
- 4,294,864,853 (32-bit)
- Scientific notation
- 1.02442 × 10⁵
- As a duration
- 102,442 s = 1 day, 4 hours, 27 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρβυμβʹ
- Mayan (base 20)
- 𝋬·𝋰·𝋢·𝋢
- Chinese
- 一十萬二千四百四十二
- Chinese (financial)
- 壹拾萬貳仟肆佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 102442, here are decompositions:
- 5 + 102437 = 102442
- 83 + 102359 = 102442
- 113 + 102329 = 102442
- 149 + 102293 = 102442
- 191 + 102251 = 102442
- 239 + 102203 = 102442
- 251 + 102191 = 102442
- 281 + 102161 = 102442
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.144.42.
- Address
- 0.1.144.42
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.144.42
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 102,442 and was likely granted around 1870.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 102442 first appears in π at position 636,831 of the decimal expansion (the 636,831ordinal-suffix:st 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.