402142332144 has 40 divisors (see below), whose sum is σ = 1187277362560. Its totient is φ = 114897809088.

The previous prime is 402142332131. The next prime is 402142332167. The reversal of 402142332144 is 441233241204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598425754 + ... + 598426425.

It is an arithmetic number, because the mean of its divisors is an integer number (29681934064).

Almost surely, 2^402142332144 is an apocalyptic number.

It is an amenable number.

402142332144 is an abundant number, since it is smaller than the sum of its proper divisors (785135030416).

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

402142332144 is a wasteful number, since it uses less digits than its factorization.

402142332144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196852197 (or 1196852191 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 402142332144 its reverse (441233241204), we get a palindrome (843375573348).

The spelling of 402142332144 in words is "four hundred two billion, one hundred forty-two million, three hundred thirty-two thousand, one hundred forty-four".