402530434 has 16 divisors (see below), whose sum is σ = 608328000. Its totient is φ = 199759824.

The previous prime is 402530417. The next prime is 402530459. The reversal of 402530434 is 434035204.

It is a junction number, because it is equal to n+sod(n) for n = 402530399 and 402530408.

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, 201589 + ... + 203575.

It is an arithmetic number, because the mean of its divisors is an integer number (38020500).

Almost surely, 2^402530434 is an apocalyptic number.

402530434 is a deficient number, since it is larger than the sum of its proper divisors (205797566).

402530434 is a wasteful number, since it uses less digits than its factorization.

402530434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 402530434 is about 20063.1611168330. The cubic root of 402530434 is about 738.3567346755.

Adding to 402530434 its reverse (434035204), we get a palindrome (836565638).

The spelling of 402530434 in words is "four hundred two million, five hundred thirty thousand, four hundred thirty-four".