402431024 has 20 divisors (see below), whose sum is σ = 780028944. Its totient is φ = 201133248.

The previous prime is 402430997. The next prime is 402431027. The reversal of 402431024 is 420134204.

It is a junction number, because it is equal to n+sod(n) for n = 402430987 and 402431005.

It is not an unprimeable number, because it can be changed into a prime (402431027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60974 + ... + 67250.

Almost surely, 2^402431024 is an apocalyptic number.

It is an amenable number.

402431024 is a deficient number, since it is larger than the sum of its proper divisors (377597920).

402431024 is a wasteful number, since it uses less digits than its factorization.

402431024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10292 (or 10286 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402431024 is about 20060.6835377063. The cubic root of 402431024 is about 738.2959474820.

Adding to 402431024 its reverse (420134204), we get a palindrome (822565228).

The spelling of 402431024 in words is "four hundred two million, four hundred thirty-one thousand, twenty-four".