402312424 has 16 divisors (see below), whose sum is σ = 756084420. Its totient is φ = 200689920.

The previous prime is 402312353. The next prime is 402312437. The reversal of 402312424 is 424213204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 346332100 + 55980324 = 18610^2 + 7482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402312395 and 402312404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54607 + ... + 61534.

Almost surely, 2^402312424 is an apocalyptic number.

It is an amenable number.

402312424 is a deficient number, since it is larger than the sum of its proper divisors (353771996).

402312424 is a wasteful number, since it uses less digits than its factorization.

402312424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116580 (or 116576 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 402312424 is about 20057.7272890026. The cubic root of 402312424 is about 738.2234128965.

Adding to 402312424 its reverse (424213204), we get a palindrome (826525628).

The spelling of 402312424 in words is "four hundred two million, three hundred twelve thousand, four hundred twenty-four".