12624442 has 4 divisors (see below), whose sum is σ = 18936666. Its totient is φ = 6312220.

The previous prime is 12624431. The next prime is 12624461. The reversal of 12624442 is 24442621.

It is a happy number.

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., 12383361 + 241081 = 3519^2 + 491^2 .

It is a super-2 number, since 2×12624442² = 318753071622728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3156109 + ... + 3156112.

Almost surely, 2^12624442 is an apocalyptic number.

12624442 is a deficient number, since it is larger than the sum of its proper divisors (6312224).

12624442 is an equidigital number, since it uses as much as digits as its factorization.

12624442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312223.

The product of its digits is 3072, while the sum is 25.

The square root of 12624442 is about 3553.0890785343. The cubic root of 12624442 is about 232.8470448297.

The spelling of 12624442 in words is "twelve million, six hundred twenty-four thousand, four hundred forty-two".