402204122 has 16 divisors (see below), whose sum is σ = 672416640. Its totient is φ = 179310528.

The previous prime is 402204109. The next prime is 402204133. The reversal of 402204122 is 221402204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 402204122.

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, 310658 + ... + 311949.

It is an arithmetic number, because the mean of its divisors is an integer number (42026040).

Almost surely, 2^402204122 is an apocalyptic number.

402204122 is a deficient number, since it is larger than the sum of its proper divisors (270212518).

402204122 is a wasteful number, since it uses less digits than its factorization.

402204122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622645.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 402204122 is about 20055.0273497694. The cubic root of 402204122 is about 738.1571640124.

Adding to 402204122 its reverse (221402204), we get a palindrome (623606326).

The spelling of 402204122 in words is "four hundred two million, two hundred four thousand, one hundred twenty-two".