13542123523 has 4 divisors (see below), whose sum is σ = 13542607288. Its totient is φ = 13541639760.

The previous prime is 13542123521. The next prime is 13542123527. The reversal of 13542123523 is 32532124531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13542123523 - 2¹ = 13542123521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13542123521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197133 + ... + 256798.

It is an arithmetic number, because the mean of its divisors is an integer number (3385651822).

Almost surely, 2^13542123523 is an apocalyptic number.

13542123523 is a deficient number, since it is larger than the sum of its proper divisors (483765).

13542123523 is an equidigital number, since it uses as much as digits as its factorization.

13542123523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483764.

The product of its digits is 21600, while the sum is 31.

The spelling of 13542123523 in words is "thirteen billion, five hundred forty-two million, one hundred twenty-three thousand, five hundred twenty-three".