1,042,720
1,042,720 is a composite number, even.
1,042,720 (one million forty-two thousand seven hundred twenty) is an even 7-digit number. It is a composite number with 96 divisors, and factors as 2⁵ × 5 × 7³ × 19. Its proper divisors sum to 1,981,280, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xFE920.
Interestingness
Properties
- Parity
- Even
- Digit count
- 7
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 272,401
- Square (n²)
- 1,087,264,998,400
- Cube (n³)
- 1,133,712,959,131,648,000
- Divisor count
- 96
- σ(n) — sum of divisors
- 3,024,000
- φ(n) — Euler's totient
- 338,688
- Sum of prime factors
- 55
Primality
Prime factorization: 2 5 × 5 × 7 3 × 19
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,042,720 = [1021; (7, 3, 7, 1, 2, 4, 3, 1, 1, 9, 1, 5, 1, 3, 1, 3, 2, 5, 1, 6, 4, 1, 1, 41, …)]
Representations
- In words
- one million forty-two thousand seven hundred twenty
- Ordinal
- 1042720th
- Binary
- 11111110100100100000
- Octal
- 3764440
- Hexadecimal
- 0xFE920
- Base64
- D+kg
- One's complement
- 4,293,924,575 (32-bit)
- Scientific notation
- 1.04272 × 10⁶
- As a duration
- 1,042,720 s = 12 days, 1 hour, 38 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓁨𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Chinese
- 一百零四萬二千七百二十
- Chinese (financial)
- 壹佰零肆萬貳仟柒佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1042720, here are decompositions:
- 11 + 1042709 = 1042720
- 17 + 1042703 = 1042720
- 89 + 1042631 = 1042720
- 101 + 1042619 = 1042720
- 113 + 1042607 = 1042720
- 137 + 1042583 = 1042720
- 149 + 1042571 = 1042720
- 191 + 1042529 = 1042720
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.233.32.
- Address
- 0.15.233.32
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.233.32
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Could be parsed as a date. Most likely interpretation: Sunday, January 4, 2720 (MDDYYYY (US, single-digit month)).
Other possible interpretations (3)
- 2720-04-01 (DMMYYYY (Euro, single-digit day))
- 2720-10-04 (MMDYYYY (US, single-digit day))
- 2720-04-10 (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 1,042,720 and was likely granted around 1912.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 1042720 first appears in π at position 349,560 of the decimal expansion (the 349,560ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.