13240405427 has 2 divisors, whose sum is σ = 13240405428. Its totient is φ = 13240405426.

The previous prime is 13240405361. The next prime is 13240405483. The reversal of 13240405427 is 72450404231.

It is a strong prime.

It is an emirp because it is prime and its reverse (72450404231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13240405427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13240405393 and 13240405402.

It is not a weakly prime, because it can be changed into another prime (13240405487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6620202713 + 6620202714.

It is an arithmetic number, because the mean of its divisors is an integer number (6620202714).

Almost surely, 2^13240405427 is an apocalyptic number.

13240405427 is a deficient number, since it is larger than the sum of its proper divisors (1).

13240405427 is an equidigital number, since it uses as much as digits as its factorization.

13240405427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 13240405427 its reverse (72450404231), we get a palindrome (85690809658).

The spelling of 13240405427 in words is "thirteen billion, two hundred forty million, four hundred five thousand, four hundred twenty-seven".