1,048,721
1,048,721 is a prime, odd.
1,048,721 (one million forty-eight thousand seven 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, 0x100091.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 7
- Digit sum
- 23
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 21 bits
- Reversed
- 1,278,401
- Square (n²)
- 1,099,815,735,841
- Cube (n³)
- 1,153,399,858,306,909,361
- Divisor count
- 2
- σ(n) — sum of divisors
- 1,048,722
- φ(n) — Euler's totient
- 1,048,720
Primality
1,048,721 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,048,721 = [1024; (14, 8, 41, 1, 2, 13, 7, 4, 1, 2, 9, 1, 1, 1, 2, 1, 3, 1, 2, 4, 1, 24, 1, 3, …)]
Representations
- In words
- one million forty-eight thousand seven hundred twenty-one
- Ordinal
- 1048721st
- Binary
- 100000000000010010001
- Octal
- 4000221
- Hexadecimal
- 0x100091
- Base64
- EACR
- One's complement
- 4,293,918,574 (32-bit)
- Scientific notation
- 1.048721 × 10⁶
- As a duration
- 1,048,721 s = 12 days, 3 hours, 18 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓁨𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Chinese
- 一百零四萬八千七百二十一
- Chinese (financial)
- 壹佰零肆萬捌仟柒佰貳拾壹
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.16.0.145.
- Address
- 0.16.0.145
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.16.0.145
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Could be parsed as a date. Most likely interpretation: Tuesday, January 4, 8721 (MDDYYYY (US, single-digit month)).
Other possible interpretations (3)
- 8721-04-01 (DMMYYYY (Euro, single-digit day))
- 8721-10-04 (MMDYYYY (US, single-digit day))
- 8721-04-10 (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 1,048,721 and was likely granted around 1912.
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.