402144332122 has 32 divisors (see below), whose sum is σ = 655461797760. Its totient is φ = 183939188160.

The previous prime is 402144332113. The next prime is 402144332123. The reversal of 402144332122 is 221233441204.

It is not an unprimeable number, because it can be changed into a prime (402144332123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2451204 + ... + 2610112.

It is an arithmetic number, because the mean of its divisors is an integer number (20483181180).

Almost surely, 2^402144332122 is an apocalyptic number.

402144332122 is a deficient number, since it is larger than the sum of its proper divisors (253317465638).

402144332122 is a wasteful number, since it uses less digits than its factorization.

402144332122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159798.

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

Adding to 402144332122 its reverse (221233441204), we get a palindrome (623377773326).

The spelling of 402144332122 in words is "four hundred two billion, one hundred forty-four million, three hundred thirty-two thousand, one hundred twenty-two".