Live analysis

1,042,640

1,042,640 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

1,042,640 (one million forty-two thousand six hundred forty) is an even 7-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 5 × 13,033. Its proper divisors sum to 1,381,684, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xFE8D0.

Abundant Number Gapful Number Odious Number Pernicious Number Refactorable Number Semiperfect Number

Interestingness

★ ☆ ☆ ☆ ☆

3 notable facts · grade F

1,042,628 1,042,629 1,042,630 1,042,631 1,042,632 1,042,633 1,042,634 1,042,635 1,042,636 1,042,637 1,042,638 1,042,639 1,042,640 1,042,641 1,042,642 1,042,643 1,042,644 1,042,645 1,042,646 1,042,647 1,042,648 1,042,649 1,042,650 1,042,651 1,042,652

less more

Properties

Parity: Even
Digit count: 7
Digit sum: 17
Digit product: 0
Digital root: 8
Palindrome: No
Bit width: 20 bits
Reversed: 462,401
Square (n²): 1,087,098,169,600
Cube (n³): 1,133,452,035,551,744,000
Divisor count: 20
σ(n) — sum of divisors: 2,424,324
φ(n) — Euler's totient: 417,024
Sum of prime factors: 13,046

Primality

Prime factorization: 2 ⁴ × 5 × 13033

Nearest primes: 1,042,633 (−7) · 1,042,681 (+41)

Divisors & multiples

All divisors (20)

1 · 2 · 4 · 5 · 8 · 10 · 16 · 20 · 40 · 80 · 13033 · 26066 · 52132 · 65165 · 104264 · 130330 · 208528 · 260660 · 521320 (half) · 1042640

Aliquot sum (sum of proper divisors): 1,381,684

Factor pairs (a × b = 1,042,640)

1 × 1042640

2 × 521320

4 × 260660

5 × 208528

8 × 130330

10 × 104264

16 × 65165

20 × 52132

40 × 26066

80 × 13033

First multiples

1,042,640 · 2,085,280 (double) · 3,127,920 · 4,170,560 · 5,213,200 · 6,255,840 · 7,298,480 · 8,341,120 · 9,383,760 · 10,426,400

Sums & aliquot sequence

As a sum of two squares: 136² + 1,012² = 716² + 728²

As consecutive integers: 208,526 + 208,527 + 208,528 + 208,529 + 208,530 32,567 + 32,568 + … + 32,598 6,437 + 6,438 + … + 6,596

Aliquot sequence: 1,042,640 → 1,381,684 → 1,059,216 → 1,677,216 → 2,725,728 → 4,429,560 → 8,859,480 → 22,244,520 → 44,489,400 → 93,429,600 → 238,424,160 → 613,376,160 → 1,318,760,256 → 2,511,478,464 → 4,892,089,152 → 8,349,593,280 → 22,040,673,600 — keeps growing

Continued fraction of √n

√1,042,640 = [1021; (10, 3, 1, 4, 1, 1, 4, 1, 2, 12, 3, 31, 10, 1, 1, 1, 16, 1, 1, 49, 3, 2, 1, 1, …)]

Representations

In words: one million forty-two thousand six hundred forty
Ordinal: 1042640th
Binary: 11111110100011010000
Octal: 3764320
Hexadecimal: 0xFE8D0
Base64: D+jQ
One's complement: 4,293,924,655 (32-bit)
Scientific notation: 1.04264 × 10⁶
As a duration: 1,042,640 s = 12 days, 1 hour, 37 minutes, 20 seconds

In other bases

ternary (3) 1221222020022

quaternary (4) 3332203100

quinary (5) 231331030

senary (6) 34203012

septenary (7) 11601524

nonary (9) 1858208

undecimal (11) 652395

duodecimal (12) 423468

tridecimal (13) 2a6761

tetradecimal (14) 1d1d84

pentadecimal (15) 158de5

As an angle

1,042,640° = 2,896 × 360° + 80°

80° ≈ 1.396 rad

Compass bearing: E (east)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
Egyptian hieroglyphic: 𓁨𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
Chinese: 一百零四萬二千六百四十
Chinese (financial): 壹佰零肆萬貳仟陸佰肆拾

In other modern scripts

Eastern Arabic ١٠٤٢٦٤٠ Devanagari १०४२६४० Bengali ১০৪২৬৪০ Tamil ௧௦௪௨௬௪௦ Thai ๑๐๔๒๖๔๐ Tibetan ༡༠༤༢༦༤༠ Khmer ១០៤២៦៤០ Lao ໑໐໔໒໖໔໐ Burmese ၁၀၄၂၆၄၀

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1042640, here are decompositions:

7 + 1042633 = 1042640
31 + 1042609 = 1042640
43 + 1042597 = 1042640
241 + 1042399 = 1042640
271 + 1042369 = 1042640
283 + 1042357 = 1042640
307 + 1042333 = 1042640
331 + 1042309 = 1042640

Showing the first eight; more decompositions exist.

Hex color

#0FE8D0

RGB(15, 232, 208)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.232.208.

Address: 0.15.232.208
Class: reserved
IPv4-mapped IPv6: ::ffff:0.15.232.208

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Possible date

Could be parsed as a date. Most likely interpretation: Saturday, January 4, 2640 (MDDYYYY (US, single-digit month)).

Other possible interpretations (3)

2640-04-01 (DMMYYYY (Euro, single-digit day))
2640-10-04 (MMDYYYY (US, single-digit day))
2640-04-10 (DDMYYYY (Euro, single-digit month))

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 1,042,640 and was likely granted around 1912.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Look up US1,042,640 on Google Patents ↗ Look up on USPTO ↗