402144444124 has 12 divisors (see below), whose sum is σ = 703795749048. Its totient is φ = 201059944400.

The previous prime is 402144444103. The next prime is 402144444151. The reversal of 402144444124 is 421444441204.

It is a self number, because there is not a number n which added to its sum of digits gives 402144444124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2995522 + ... + 3126889.

It is an arithmetic number, because the mean of its divisors is an integer number (58649645754).

Almost surely, 2^402144444124 is an apocalyptic number.

It is an amenable number.

402144444124 is a deficient number, since it is larger than the sum of its proper divisors (301651304924).

402144444124 is a wasteful number, since it uses less digits than its factorization.

402144444124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6138836 (or 6138834 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 34.

Adding to 402144444124 its reverse (421444441204), we get a palindrome (823588885328).

The spelling of 402144444124 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-four thousand, one hundred twenty-four".