402044402442 has 16 divisors (see below), whose sum is σ = 804349149120. Its totient is φ = 133971410112.

The previous prime is 402044402413. The next prime is 402044402449. The reversal of 402044402442 is 244204440204.

It is not an unprimeable number, because it can be changed into a prime (402044402449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10827598 + ... + 10864665.

It is an arithmetic number, because the mean of its divisors is an integer number (50271821820).

Almost surely, 2^402044402442 is an apocalyptic number.

402044402442 is an abundant number, since it is smaller than the sum of its proper divisors (402304746678).

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

402044402442 is a wasteful number, since it uses less digits than its factorization.

402044402442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21695357.

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 402044402442 its reverse (244204440204), we get a palindrome (646248842646).

The spelling of 402044402442 in words is "four hundred two billion, forty-four million, four hundred two thousand, four hundred forty-two".