12920413 has 4 divisors (see below), whose sum is σ = 14095008. Its totient is φ = 11745820.

The previous prime is 12920407. The next prime is 12920417. The reversal of 12920413 is 31402921.

12920413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12920413 - 2⁵ = 12920381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12920417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587281 + ... + 587302.

It is an arithmetic number, because the mean of its divisors is an integer number (3523752).

Almost surely, 2^12920413 is an apocalyptic number.

It is an amenable number.

12920413 is a deficient number, since it is larger than the sum of its proper divisors (1174595).

12920413 is a wasteful number, since it uses less digits than its factorization.

12920413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174594.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 12920413 is about 3594.4976005000. The cubic root of 12920413 is about 234.6526511713.

The spelling of 12920413 in words is "twelve million, nine hundred twenty thousand, four hundred thirteen".