402144424312 has 8 divisors (see below), whose sum is σ = 754020795600. Its totient is φ = 201072212152.

The previous prime is 402144424303. The next prime is 402144424321. The reversal of 402144424312 is 213424441204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (402144424303) and next prime (402144424321).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25134026512 + ... + 25134026527.

It is an arithmetic number, because the mean of its divisors is an integer number (94252599450).

Almost surely, 2^402144424312 is an apocalyptic number.

It is an amenable number.

402144424312 is a deficient number, since it is larger than the sum of its proper divisors (351876371288).

402144424312 is a wasteful number, since it uses less digits than its factorization.

402144424312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50268053045 (or 50268053041 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 402144424312 its reverse (213424441204), we get a palindrome (615568865516).

The spelling of 402144424312 in words is "four hundred two billion, one hundred forty-four million, four hundred twenty-four thousand, three hundred twelve".