13542205123 has 2 divisors, whose sum is σ = 13542205124. Its totient is φ = 13542205122.

The previous prime is 13542205097. The next prime is 13542205207. The reversal of 13542205123 is 32150224531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13542205123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13542205091 and 13542205100.

It is not a weakly prime, because it can be changed into another prime (13542205723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6771102561 + 6771102562.

It is an arithmetic number, because the mean of its divisors is an integer number (6771102562).

Almost surely, 2^13542205123 is an apocalyptic number.

13542205123 is a deficient number, since it is larger than the sum of its proper divisors (1).

13542205123 is an equidigital number, since it uses as much as digits as its factorization.

13542205123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 13542205123 its reverse (32150224531), we get a palindrome (45692429654).

The spelling of 13542205123 in words is "thirteen billion, five hundred forty-two million, two hundred five thousand, one hundred twenty-three".