13245123 has 4 divisors (see below), whose sum is σ = 17660168. Its totient is φ = 8830080.

The previous prime is 13245107. The next prime is 13245137. The reversal of 13245123 is 32154231.

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

It is not a de Polignac number, because 13245123 - 2⁴ = 13245107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13245123.

It is not an unprimeable number, because it can be changed into a prime (13245623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2207518 + ... + 2207523.

It is an arithmetic number, because the mean of its divisors is an integer number (4415042).

Almost surely, 2^13245123 is an apocalyptic number.

13245123 is a deficient number, since it is larger than the sum of its proper divisors (4415045).

13245123 is an equidigital number, since it uses as much as digits as its factorization.

13245123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4415044.

The product of its digits is 720, while the sum is 21.

The square root of 13245123 is about 3639.3849755144. The cubic root of 13245123 is about 236.6021382850.

Adding to 13245123 its reverse (32154231), we get a palindrome (45399354).

The spelling of 13245123 in words is "thirteen million, two hundred forty-five thousand, one hundred twenty-three".