402442144412 has 36 divisors (see below), whose sum is σ = 893735156664. Its totient is φ = 156795639840.

The previous prime is 402442144343. The next prime is 402442144417. The reversal of 402442144412 is 214441244204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402442144417) 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 11 ways as a sum of consecutive naturals, for example, 93328583 + ... + 93332894.

It is an arithmetic number, because the mean of its divisors is an integer number (24825976574).

Almost surely, 2^402442144412 is an apocalyptic number.

It is an amenable number.

402442144412 is an abundant number, since it is smaller than the sum of its proper divisors (491293012252).

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

402442144412 is a wasteful number, since it uses less digits than its factorization.

402442144412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186661506 (or 186661497 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 402442144412 its reverse (214441244204), we get a palindrome (616883388616).

The spelling of 402442144412 in words is "four hundred two billion, four hundred forty-two million, one hundred forty-four thousand, four hundred twelve".