42513013393 has 2 divisors, whose sum is σ = 42513013394. Its totient is φ = 42513013392.

The previous prime is 42513013321. The next prime is 42513013429. The reversal of 42513013393 is 39331031524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26972149824 + 15540863569 = 164232^2 + 124663^2 .

It is a cyclic number.

It is not a de Polignac number, because 42513013393 - 2⁹ = 42513012881 is a prime.

It is not a weakly prime, because it can be changed into another prime (42513016393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256506696 + 21256506697.

It is an arithmetic number, because the mean of its divisors is an integer number (21256506697).

Almost surely, 2^42513013393 is an apocalyptic number.

It is an amenable number.

42513013393 is a deficient number, since it is larger than the sum of its proper divisors (1).

42513013393 is an equidigital number, since it uses as much as digits as its factorization.

42513013393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 34.

The spelling of 42513013393 in words is "forty-two billion, five hundred thirteen million, thirteen thousand, three hundred ninety-three".