402231330144 has 144 divisors (see below), whose sum is σ = 1364713585200. Its totient is φ = 114923225088.

The previous prime is 402231330121. The next prime is 402231330157. The reversal of 402231330144 is 441033132204.

402231330144 is a `hidden beast` number, since 4 + 0 + 2 + 2 + 313 + 301 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4708129 + ... + 4792800.

It is an arithmetic number, because the mean of its divisors is an integer number (9477177675).

Almost surely, 2^402231330144 is an apocalyptic number.

It is an amenable number.

402231330144 is an abundant number, since it is smaller than the sum of its proper divisors (962482255056).

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

402231330144 is a wasteful number, since it uses less digits than its factorization.

402231330144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9500962 (or 9500941 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 402231330144 its reverse (441033132204), we get a palindrome (843264462348).

The spelling of 402231330144 in words is "four hundred two billion, two hundred thirty-one million, three hundred thirty thousand, one hundred forty-four".