402312044 has 12 divisors (see below), whose sum is σ = 734656944. Its totient is φ = 192410064.

The previous prime is 402312037. The next prime is 402312047. The reversal of 402312044 is 440213204.

It is not an unprimeable number, because it can be changed into a prime (402312047) 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 3 ways as a sum of consecutive naturals, for example, 2186387 + ... + 2186570.

It is an arithmetic number, because the mean of its divisors is an integer number (61221412).

Almost surely, 2^402312044 is an apocalyptic number.

It is an amenable number.

402312044 is a deficient number, since it is larger than the sum of its proper divisors (332344900).

402312044 is a wasteful number, since it uses less digits than its factorization.

402312044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372984 (or 4372982 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402312044 is about 20057.7178163419. The cubic root of 402312044 is about 738.2231804693.

Adding to 402312044 its reverse (440213204), we get a palindrome (842525248).

The spelling of 402312044 in words is "four hundred two million, three hundred twelve thousand, forty-four".