402224242 has 24 divisors (see below), whose sum is σ = 703579500. Its totient is φ = 171954720.

The previous prime is 402224239. The next prime is 402224257. The reversal of 402224242 is 242422204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 290054961 + 112169281 = 17031^2 + 10591^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36384 + ... + 46132.

Almost surely, 2^402224242 is an apocalyptic number.

402224242 is a deficient number, since it is larger than the sum of its proper divisors (301355258).

402224242 is a wasteful number, since it uses less digits than its factorization.

402224242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10186 (or 10179 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 402224242 is about 20055.5289633557. The cubic root of 402224242 is about 738.1694724181.

Adding to 402224242 its reverse (242422204), we get a palindrome (644646446).

The spelling of 402224242 in words is "four hundred two million, two hundred twenty-four thousand, two hundred forty-two".