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BaseRepresentation
bin101101111011…
…101100111101
3211122202011202
4231323230331
511040303041
61110025245
7204230006
oct55735475
924582152
1012041021
116884663
124048225
132657885
1510cca9b
hexb7bb3d

12041021 has 8 divisors (see below), whose sum is σ = 12411864. Its totient is φ = 11672640.

The previous prime is 12040999. The next prime is 12041027. The reversal of 12041021 is 12014021.

It can be written as a sum of positive squares in 4 ways, for example, as 121 + 12040900 = 11^2 + 3470^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12041021 - 26 = 12040957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12040993 and 12041011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12041027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15191 + ... + 15963.

It is an arithmetic number, because the mean of its divisors is an integer number (1551483).

Almost surely, 212041021 is an apocalyptic number.

It is an amenable number.

12041021 is a deficient number, since it is larger than the sum of its proper divisors (370843).

12041021 is an equidigital number, since it uses as much as digits as its factorization.

12041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12041021 is about 3470.0174351147. The cubic root of 12041021 is about 229.2034258316.

Adding to 12041021 its reverse (12014021), we get a palindrome (24055042).

Subtracting from 12041021 its reverse (12014021), we obtain a cube (27000 = 303).

The spelling of 12041021 in words is "twelve million, forty-one thousand, twenty-one".

Divisors: 1 37 421 773 15577 28601 325433 12041021