13242245 has 4 divisors (see below), whose sum is σ = 15890700. Its totient is φ = 10593792.

The previous prime is 13242199. The next prime is 13242253. The reversal of 13242245 is 54224231.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2989441 + 10252804 = 1729^2 + 3202^2 .

It is a cyclic number.

It is not a de Polignac number, because 13242245 - 2¹² = 13238149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13242245.

It is a congruent number.

It is an unprimeable number.

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, 1324220 + ... + 1324229.

It is an arithmetic number, because the mean of its divisors is an integer number (3972675).

Almost surely, 2^13242245 is an apocalyptic number.

It is an amenable number.

13242245 is a deficient number, since it is larger than the sum of its proper divisors (2648455).

13242245 is an equidigital number, since it uses as much as digits as its factorization.

13242245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648454.

The product of its digits is 1920, while the sum is 23.

The square root of 13242245 is about 3638.9895575558. The cubic root of 13242245 is about 236.5850001459.

Adding to 13242245 its reverse (54224231), we get a palindrome (67466476).

The spelling of 13242245 in words is "thirteen million, two hundred forty-two thousand, two hundred forty-five".