402431523040 has 48 divisors (see below), whose sum is σ = 955522159200. Its totient is φ = 160163688960.

The previous prime is 402431523031. The next prime is 402431523073. The reversal of 402431523040 is 40325134204.

It is a happy number.

It is a super-2 number, since 2×402431523040² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6287751 + ... + 6351430.

It is an arithmetic number, because the mean of its divisors is an integer number (19906711650).

Almost surely, 2^402431523040 is an apocalyptic number.

402431523040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402431523040 is an abundant number, since it is smaller than the sum of its proper divisors (553090636160).

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

402431523040 is a wasteful number, since it uses less digits than its factorization.

402431523040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12639395 (or 12639387 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 402431523040 its reverse (40325134204), we get a palindrome (442756657244).

The spelling of 402431523040 in words is "four hundred two billion, four hundred thirty-one million, five hundred twenty-three thousand, forty".