13242515 has 16 divisors (see below), whose sum is σ = 18670176. Its totient is φ = 8889600.

The previous prime is 13242511. The next prime is 13242517. The reversal of 13242515 is 51524231.

It is not a de Polignac number, because 13242515 - 2² = 13242511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13242511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8546 + ... + 9975.

It is an arithmetic number, because the mean of its divisors is an integer number (1166886).

Almost surely, 2^13242515 is an apocalyptic number.

13242515 is a deficient number, since it is larger than the sum of its proper divisors (5427661).

13242515 is a wasteful number, since it uses less digits than its factorization.

13242515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18550.

The product of its digits is 1200, while the sum is 23.

The square root of 13242515 is about 3639.0266555770. The cubic root of 13242515 is about 236.5866080685.

Adding to 13242515 its reverse (51524231), we get a palindrome (64766746).

The spelling of 13242515 in words is "thirteen million, two hundred forty-two thousand, five hundred fifteen".