12642922 has 4 divisors (see below), whose sum is σ = 18964386. Its totient is φ = 6321460.

The previous prime is 12642919. The next prime is 12642979. The reversal of 12642922 is 22924621.

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

It can be written as a sum of positive squares in only one way, i.e., 11229201 + 1413721 = 3351^2 + 1189^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3160729 + ... + 3160732.

Almost surely, 2^12642922 is an apocalyptic number.

12642922 is a deficient number, since it is larger than the sum of its proper divisors (6321464).

12642922 is an equidigital number, since it uses as much as digits as its factorization.

12642922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321463.

The product of its digits is 3456, while the sum is 28.

The square root of 12642922 is about 3555.6886815355. The cubic root of 12642922 is about 232.9606053728.

It can be divided in two parts, 1264 and 2922, that added together give a triangular number (4186 = T₉₁).

The spelling of 12642922 in words is "twelve million, six hundred forty-two thousand, nine hundred twenty-two".