402942424 has 72 divisors (see below), whose sum is σ = 827143380. Its totient is φ = 183968640.

The previous prime is 402942401. The next prime is 402942457. The reversal of 402942424 is 424249204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4854687 + ... + 4854769.

Almost surely, 2^402942424 is an apocalyptic number.

It is an amenable number.

402942424 is an abundant number, since it is smaller than the sum of its proper divisors (424200956).

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

402942424 is a wasteful number, since it uses less digits than its factorization.

402942424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 402942424 is about 20073.4258162377. The cubic root of 402942424 is about 738.6085515511.

The spelling of 402942424 in words is "four hundred two million, nine hundred forty-two thousand, four hundred twenty-four".