402421304 has 16 divisors (see below), whose sum is σ = 755990520. Its totient is φ = 200823840.

The previous prime is 402421303. The next prime is 402421307. The reversal of 402421304 is 403124204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402421303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43907 + ... + 52274.

Almost surely, 2^402421304 is an apocalyptic number.

It is an amenable number.

402421304 is a deficient number, since it is larger than the sum of its proper divisors (353569216).

402421304 is a wasteful number, since it uses less digits than its factorization.

402421304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96710 (or 96706 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402421304 is about 20060.4412713180. The cubic root of 402421304 is about 738.2900033624.

Adding to 402421304 its reverse (403124204), we get a palindrome (805545508).

The spelling of 402421304 in words is "four hundred two million, four hundred twenty-one thousand, three hundred four".