12420544 has 14 divisors (see below), whose sum is σ = 24647144. Its totient is φ = 6210240.

The previous prime is 12420521. The next prime is 12420571. The reversal of 12420544 is 44502421.

It is a happy number.

It is a congruent number.

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, 96972 + ... + 97099.

Almost surely, 2^12420544 is an apocalyptic number.

It is an amenable number.

12420544 is a deficient number, since it is larger than the sum of its proper divisors (12226600).

12420544 is an equidigital number, since it uses as much as digits as its factorization.

12420544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194083 (or 194073 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 12420544 is about 3524.2792170882. The cubic root of 12420544 is about 231.5866599722.

Adding to 12420544 its reverse (44502421), we get a palindrome (56922965).

The spelling of 12420544 in words is "twelve million, four hundred twenty thousand, five hundred forty-four".