12924921 has 8 divisors (see below), whose sum is σ = 18140320. Its totient is φ = 8163072.

The previous prime is 12924889. The next prime is 12924931. The reversal of 12924921 is 12942921.

It is a happy number.

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

It is not a de Polignac number, because 12924921 - 2⁵ = 12924889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12924931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113320 + ... + 113433.

It is an arithmetic number, because the mean of its divisors is an integer number (2267540).

Almost surely, 2^12924921 is an apocalyptic number.

It is an amenable number.

12924921 is a deficient number, since it is larger than the sum of its proper divisors (5215399).

12924921 is a wasteful number, since it uses less digits than its factorization.

12924921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226775.

The product of its digits is 2592, while the sum is 30.

The square root of 12924921 is about 3595.1246153645. The cubic root of 12924921 is about 234.6799385124.

The spelling of 12924921 in words is "twelve million, nine hundred twenty-four thousand, nine hundred twenty-one".