402104242013 has 4 divisors (see below), whose sum is σ = 419587035168. Its totient is φ = 384621448860.

The previous prime is 402104241989. The next prime is 402104242063. The reversal of 402104242013 is 310242401204.

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 a de Polignac number, because none of the positive numbers 2^k-402104242013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 17482793131 = 402104242013 / (4 + 0 + 2 + 1 + 0 + 4 + 2 + 4 + 2 + 0 + 1 + 3).

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 402104242013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402104242063) 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, 8741396543 + ... + 8741396588.

It is an arithmetic number, because the mean of its divisors is an integer number (104896758792).

Almost surely, 2^402104242013 is an apocalyptic number.

It is an amenable number.

402104242013 is a deficient number, since it is larger than the sum of its proper divisors (17482793155).

402104242013 is a wasteful number, since it uses less digits than its factorization.

402104242013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17482793154.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 402104242013 its reverse (310242401204), we get a palindrome (712346643217).

The spelling of 402104242013 in words is "four hundred two billion, one hundred four million, two hundred forty-two thousand, thirteen".