402144233144 has 16 divisors (see below), whose sum is σ = 754092659520. Its totient is φ = 201052857280.

The previous prime is 402144233143. The next prime is 402144233147. The reversal of 402144233144 is 441332441204.

It is a self number, because there is not a number n which added to its sum of digits gives 402144233144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402144233143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2318477 + ... + 2485884.

It is an arithmetic number, because the mean of its divisors is an integer number (47130791220).

Almost surely, 2^402144233144 is an apocalyptic number.

It is an amenable number.

402144233144 is a deficient number, since it is larger than the sum of its proper divisors (351948426376).

402144233144 is a wasteful number, since it uses less digits than its factorization.

402144233144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4814830 (or 4814826 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 402144233144 its reverse (441332441204), we get a palindrome (843476674348).

The spelling of 402144233144 in words is "four hundred two billion, one hundred forty-four million, two hundred thirty-three thousand, one hundred forty-four".