13415243 has 4 divisors (see below), whose sum is σ = 13642680. Its totient is φ = 13187808.

The previous prime is 13415239. The next prime is 13415249. The reversal of 13415243 is 34251431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34251431 = 443 ⋅77317.

It is a cyclic number.

It is not a de Polignac number, because 13415243 - 2² = 13415239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13415249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113630 + ... + 113747.

It is an arithmetic number, because the mean of its divisors is an integer number (3410670).

Almost surely, 2^13415243 is an apocalyptic number.

13415243 is a deficient number, since it is larger than the sum of its proper divisors (227437).

13415243 is an equidigital number, since it uses as much as digits as its factorization.

13415243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227436.

The product of its digits is 1440, while the sum is 23.

The square root of 13415243 is about 3662.6824869213. The cubic root of 13415243 is about 237.6108025921.

Adding to 13415243 its reverse (34251431), we get a palindrome (47666674).

The spelling of 13415243 in words is "thirteen million, four hundred fifteen thousand, two hundred forty-three".