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1,021,225

1,021,225 is a composite number, odd.

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.).

1,021,225 (one million twenty-one thousand two hundred twenty-five) is an odd 7-digit number. It is a composite number with 6 divisors, and factors as 5² × 40,849. Written other ways, in hexadecimal, 0xF9529.

Cube-Free Deficient Number Odious Number Pernicious Number

Interestingness

Properties

Parity
Odd
Digit count
7
Digit sum
13
Digit product
0
Digital root
4
Palindrome
No
Bit width
20 bits
Reversed
5,221,201
Square (n²)
1,042,900,500,625
Cube (n³)
1,065,036,063,750,765,625
Divisor count
6
σ(n) — sum of divisors
1,266,350
φ(n) — Euler's totient
816,960
Sum of prime factors
40,859

Primality

Prime factorization: 5 2 × 40849

Nearest primes: 1,021,217 (−8) · 1,021,243 (+18)

Divisors & multiples

All divisors (6)
1 · 5 · 25 · 40849 · 204245 · 1021225
Aliquot sum (sum of proper divisors): 245,125
Factor pairs (a × b = 1,021,225)
1 × 1021225
5 × 204245
25 × 40849
First multiples
1,021,225 · 2,042,450 (double) · 3,063,675 · 4,084,900 · 5,106,125 · 6,127,350 · 7,148,575 · 8,169,800 · 9,191,025 · 10,212,250

Sums & aliquot sequence

As a sum of two squares: 300² + 965² = 339² + 952² = 592² + 819²
As consecutive integers: 510,612 + 510,613 204,243 + 204,244 + 204,245 + 204,246 + 204,247 102,118 + 102,119 + … + 102,127 40,837 + 40,838 + … + 40,861
Aliquot sequence: 1,021,225 245,125 74,987 11,845 3,131 133 27 13 1 0 — terminates at zero

Continued fraction of √n

√1,021,225 = [1010; (1, 1, 3, 1, 9, 3, 19, 1, 2, 4, 1, 2, 2, 51, 2, 1, 1, 35, 2, 31, 11, 1, 1, 13, …)]

Representations

In words
one million twenty-one thousand two hundred twenty-five
Ordinal
1021225th
Binary
11111001010100101001
Octal
3712451
Hexadecimal
0xF9529
Base64
D5Up
One's complement
4,293,946,070 (32-bit)
Scientific notation
1.021225 × 10⁶
As a duration
1,021,225 s = 11 days, 19 hours, 40 minutes, 25 seconds
In other bases
ternary (3) 1220212212011
quaternary (4) 3321110221
quinary (5) 230134400
senary (6) 33515521
septenary (7) 11452222
nonary (9) 1825764
undecimal (11) 638297
duodecimal (12) 412ba1
tridecimal (13) 299a9a
tetradecimal (14) 1c8249
pentadecimal (15) 1528ba

As an angle

1,021,225° = 2,836 × 360° + 265°
265° ≈ 4.625 rad
Compass bearing: W (west)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓁨𓂍𓂍𓆼𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Chinese
一百零二萬一千二百二十五
Chinese (financial)
壹佰零貳萬壹仟貳佰貳拾伍
In other modern scripts
Eastern Arabic ١٠٢١٢٢٥ Devanagari १०२१२२५ Bengali ১০২১২২৫ Tamil ௧௦௨௧௨௨௫ Thai ๑๐๒๑๒๒๕ Tibetan ༡༠༢༡༢༢༥ Khmer ១០២១២២៥ Lao ໑໐໒໑໒໒໕ Burmese ၁၀၂၁၂၂၅

Also seen as

Hex color
#0F9529
RGB(15, 149, 41)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.149.41.

Address
0.15.149.41
Class
reserved
IPv4-mapped IPv6
::ffff:0.15.149.41

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

Possible date

Could be parsed as a date. Most likely interpretation: Thursday, January 2, 1225 (MDDYYYY (US, single-digit month)).

Other possible interpretations (3)
  • 1225-02-01 (DMMYYYY (Euro, single-digit day))
  • 1225-10-02 (MMDYYYY (US, single-digit day))
  • 1225-02-10 (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 1,021,225 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