13242523 has 4 divisors (see below), whose sum is σ = 15134320. Its totient is φ = 11350728.

The previous prime is 13242517. The next prime is 13242529. The reversal of 13242523 is 32524231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32524231 = 23 ⋅1414097.

It is an interprime number because it is at equal distance from previous prime (13242517) and next prime (13242529).

It is a cyclic number.

It is not a de Polignac number, because 13242523 - 2⁹ = 13242011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13242494 and 13242503.

It is not an unprimeable number, because it can be changed into a prime (13242529) 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, 945888 + ... + 945901.

It is an arithmetic number, because the mean of its divisors is an integer number (3783580).

Almost surely, 2^13242523 is an apocalyptic number.

13242523 is a deficient number, since it is larger than the sum of its proper divisors (1891797).

13242523 is an equidigital number, since it uses as much as digits as its factorization.

13242523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891796.

The product of its digits is 1440, while the sum is 22.

The square root of 13242523 is about 3639.0277547719. The cubic root of 13242523 is about 236.5866557103.

Adding to 13242523 its reverse (32524231), we get a palindrome (45766754).

The spelling of 13242523 in words is "thirteen million, two hundred forty-two thousand, five hundred twenty-three".