420000239624 has 32 divisors (see below), whose sum is σ = 910112889600. Its totient is φ = 177977627520.

The previous prime is 420000239623. The next prime is 420000239639. The reversal of 420000239624 is 426932000024.

It is a super-2 number, since 2×420000239624² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420000239621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42129872 + ... + 42139839.

It is an arithmetic number, because the mean of its divisors is an integer number (28441027800).

Almost surely, 2^420000239624 is an apocalyptic number.

It is an amenable number.

420000239624 is an abundant number, since it is smaller than the sum of its proper divisors (490112649976).

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

420000239624 is a wasteful number, since it uses less digits than its factorization.

420000239624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84269813 (or 84269809 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 420000239624 its reverse (426932000024), we get a palindrome (846932239648).

The spelling of 420000239624 in words is "four hundred twenty billion, two hundred thirty-nine thousand, six hundred twenty-four".