13240421123 has 2 divisors, whose sum is σ = 13240421124. Its totient is φ = 13240421122.

The previous prime is 13240421119. The next prime is 13240421167. The reversal of 13240421123 is 32112404231.

It is a weak prime.

It is an emirp because it is prime and its reverse (32112404231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13240421123 - 2² = 13240421119 is a prime.

It is a super-2 number, since 2×13240421123² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13240421113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6620210561 + 6620210562.

It is an arithmetic number, because the mean of its divisors is an integer number (6620210562).

Almost surely, 2^13240421123 is an apocalyptic number.

13240421123 is a deficient number, since it is larger than the sum of its proper divisors (1).

13240421123 is an equidigital number, since it uses as much as digits as its factorization.

13240421123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 13240421123 its reverse (32112404231), we get a palindrome (45352825354).

The spelling of 13240421123 in words is "thirteen billion, two hundred forty million, four hundred twenty-one thousand, one hundred twenty-three".