12582921 has 16 divisors (see below), whose sum is σ = 19019840. Its totient is φ = 7335360.

The previous prime is 12582919. The next prime is 12582929. The reversal of 12582921 is 12928521.

12582921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12582921 - 2¹ = 12582919 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12582929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7750 + ... + 9231.

It is an arithmetic number, because the mean of its divisors is an integer number (1188740).

Almost surely, 2^12582921 is an apocalyptic number.

It is an amenable number.

12582921 is a deficient number, since it is larger than the sum of its proper divisors (6436919).

12582921 is a wasteful number, since it uses less digits than its factorization.

12582921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016.

The product of its digits is 2880, while the sum is 30.

The square root of 12582921 is about 3547.2413224927. The cubic root of 12582921 is about 232.5914913366.

The spelling of 12582921 in words is "twelve million, five hundred eighty-two thousand, nine hundred twenty-one".