402144331204 has 48 divisors (see below), whose sum is σ = 923585080320. Its totient is φ = 148433312160.

The previous prime is 402144331201. The next prime is 402144331229. The reversal of 402144331204 is 402133441204.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (402144331201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34353712 + ... + 34365415.

It is an arithmetic number, because the mean of its divisors is an integer number (19241355840).

Almost surely, 2^402144331204 is an apocalyptic number.

402144331204 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

402144331204 is an abundant number, since it is smaller than the sum of its proper divisors (521440749116).

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

402144331204 is a wasteful number, since it uses less digits than its factorization.

402144331204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68719168 (or 68719166 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 402144331204 its reverse (402133441204), we get a palindrome (804277772408).

Subtracting from 402144331204 its reverse (402133441204), we obtain a square (10890000 = 3300²).

The spelling of 402144331204 in words is "four hundred two billion, one hundred forty-four million, three hundred thirty-one thousand, two hundred four".