12420343624 has 48 divisors (see below), whose sum is σ = 26469068220. Its totient is φ = 5430741120.

The previous prime is 12420343577. The next prime is 12420343627. The reversal of 12420343624 is 42634302421.

12420343624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12052087524 + 368256100 = 109782^2 + 19190^2 .

It is not an unprimeable number, because it can be changed into a prime (12420343627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127867 + ... + 202954.

Almost surely, 2^12420343624 is an apocalyptic number.

It is an amenable number.

12420343624 is an abundant number, since it is smaller than the sum of its proper divisors (14048724596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12420343624 is a wasteful number, since it uses less digits than its factorization.

12420343624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330878 (or 330855 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 12420343624 in words is "twelve billion, four hundred twenty million, three hundred forty-three thousand, six hundred twenty-four".