12921926 has 4 divisors (see below), whose sum is σ = 19382892. Its totient is φ = 6460962.

The previous prime is 12921913. The next prime is 12921941. The reversal of 12921926 is 62912921.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 12921892 and 12921901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230480 + ... + 3230483.

It is an arithmetic number, because the mean of its divisors is an integer number (4845723).

Almost surely, 2^12921926 is an apocalyptic number.

12921926 is a deficient number, since it is larger than the sum of its proper divisors (6460966).

12921926 is an equidigital number, since it uses as much as digits as its factorization.

12921926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6460965.

The product of its digits is 3888, while the sum is 32.

The square root of 12921926 is about 3594.7080549052. The cubic root of 12921926 is about 234.6618102078.

The spelling of 12921926 in words is "twelve million, nine hundred twenty-one thousand, nine hundred twenty-six".