402144424045 has 48 divisors (see below), whose sum is σ = 617793125760. Its totient is φ = 245766673152.

The previous prime is 402144424037. The next prime is 402144424063. The reversal of 402144424045 is 540424441204.

It is a happy number.

It is not a de Polignac number, because 402144424045 - 2³ = 402144424037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402144424045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1000659 + ... + 1343728.

It is an arithmetic number, because the mean of its divisors is an integer number (12870690120).

Almost surely, 2^402144424045 is an apocalyptic number.

It is an amenable number.

402144424045 is a deficient number, since it is larger than the sum of its proper divisors (215648701715).

402144424045 is a wasteful number, since it uses less digits than its factorization.

402144424045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344454 (or 2344441 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 34.

Adding to 402144424045 its reverse (540424441204), we get a palindrome (942568865249).

The spelling of 402144424045 in words is "four hundred two billion, one hundred forty-four million, four hundred twenty-four thousand, forty-five".