1,018,421
1,018,421 is a prime, odd.
1,018,421 (one million eighteen thousand four hundred twenty-one) is an odd 7-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xF8A35.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 7
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 1,248,101
- Square (n²)
- 1,037,181,333,241
- Cube (n³)
- 1,056,287,250,580,632,461
- Divisor count
- 2
- σ(n) — sum of divisors
- 1,018,422
- φ(n) — Euler's totient
- 1,018,420
Primality
1,018,421 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,018,421 = [1009; (5, 1, 14, 1, 1, 2, 1, 7, 1, 6, 1, 7, 5, 1, 19, 1, 33, 3, 1, 8, 16, 6, 6, 1, …)]
Representations
- In words
- one million eighteen thousand four hundred twenty-one
- Ordinal
- 1018421st
- Binary
- 11111000101000110101
- Octal
- 3705065
- Hexadecimal
- 0xF8A35
- Base64
- D4o1
- One's complement
- 4,293,948,874 (32-bit)
- Scientific notation
- 1.018421 × 10⁶
- As a duration
- 1,018,421 s = 11 days, 18 hours, 53 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓁨𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Chinese
- 一百零一萬八千四百二十一
- Chinese (financial)
- 壹佰零壹萬捌仟肆佰貳拾壹
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.15.138.53.
- Address
- 0.15.138.53
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.138.53
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Could be parsed as a date. Most likely interpretation: Friday, January 1, 8421 (MDDYYYY (US, single-digit month)).
Other possible interpretations (2)
- 8421-10-01 (MMDYYYY (US, single-digit day))
- 8421-01-10 (DDMYYYY (Euro, single-digit month))
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 1,018,421 and was likely granted around 1911.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.