402434431002 has 32 divisors (see below), whose sum is σ = 933181292160. Its totient is φ = 128312426880.

The previous prime is 402434430997. The next prime is 402434431031. The reversal of 402434431002 is 200134434204.

It is a happy number.

402434431002 is a `hidden beast` number, since 4 + 0 + 2 + 4 + 344 + 310 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162009399 + ... + 162011882.

It is an arithmetic number, because the mean of its divisors is an integer number (29161915380).

Almost surely, 2^402434431002 is an apocalyptic number.

402434431002 is an abundant number, since it is smaller than the sum of its proper divisors (530746861158).

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

402434431002 is a wasteful number, since it uses less digits than its factorization.

402434431002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324021315 (or 324021309 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 402434431002 its reverse (200134434204), we get a palindrome (602568865206).

The spelling of 402434431002 in words is "four hundred two billion, four hundred thirty-four million, four hundred thirty-one thousand, two".