402402343203293 has 2 divisors, whose sum is σ = 402402343203294. Its totient is φ = 402402343203292.

The previous prime is 402402343203239. The next prime is 402402343203319. The reversal of 402402343203293 is 392302343204204.

Together with previous prime (402402343203239) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291632570026009 + 110769773177284 = 17077253^2 + 10524722^2 .

It is a cyclic number.

It is not a de Polignac number, because 402402343203293 - 2⁴⁰ = 401302831575517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 402402343203293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402402343203893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201201171601646 + 201201171601647.

It is an arithmetic number, because the mean of its divisors is an integer number (201201171601647).

Almost surely, 2^{402402343203293} is an apocalyptic number.

It is an amenable number.

402402343203293 is a deficient number, since it is larger than the sum of its proper divisors (1).

402402343203293 is an equidigital number, since it uses as much as digits as its factorization.

402402343203293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 41.

Adding to 402402343203293 its reverse (392302343204204), we get a palindrome (794704686407497).

The spelling of 402402343203293 in words is "four hundred two trillion, four hundred two billion, three hundred forty-three million, two hundred three thousand, two hundred ninety-three".