402442330220 has 36 divisors (see below), whose sum is σ = 983109123360. Its totient is φ = 137980227168.

The previous prime is 402442330207. The next prime is 402442330247. The reversal of 402442330220 is 22033244204.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 402442330220.

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, 205326740 + ... + 205328699.

It is an arithmetic number, because the mean of its divisors is an integer number (27308586760).

Almost surely, 2^402442330220 is an apocalyptic number.

It is an amenable number.

402442330220 is an abundant number, since it is smaller than the sum of its proper divisors (580666793140).

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

402442330220 is a wasteful number, since it uses less digits than its factorization.

402442330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410655462 (or 410655453 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 402442330220 its reverse (22033244204), we get a palindrome (424475574424).

The spelling of 402442330220 in words is "four hundred two billion, four hundred forty-two million, three hundred thirty thousand, two hundred twenty".