402021124234313 has 4 divisors (see below), whose sum is σ = 402021402136320. Its totient is φ = 402020846332308.

The previous prime is 402021124234243. The next prime is 402021124234319. The reversal of 402021124234313 is 313432421120204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402021124234313 - 2²⁴ = 402021107457097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402021124234313.

It is not an unprimeable number, because it can be changed into a prime (402021124234319) 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, 136769645 + ... + 139678122.

It is an arithmetic number, because the mean of its divisors is an integer number (100505350534080).

Almost surely, 2^{402021124234313} is an apocalyptic number.

It is an amenable number.

402021124234313 is a deficient number, since it is larger than the sum of its proper divisors (277902007).

402021124234313 is a wasteful number, since it uses less digits than its factorization.

402021124234313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277902006.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 402021124234313 its reverse (313432421120204), we get a palindrome (715453545354517).

The spelling of 402021124234313 in words is "four hundred two trillion, twenty-one billion, one hundred twenty-four million, two hundred thirty-four thousand, three hundred thirteen".