13242147 has 4 divisors (see below), whose sum is σ = 17656200. Its totient is φ = 8828096.

The previous prime is 13242121. The next prime is 13242157. The reversal of 13242147 is 74124231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74124231 = 3 ⋅24708077.

It is a cyclic number.

It is not a de Polignac number, because 13242147 - 2¹¹ = 13240099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13242157) 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, 2207022 + ... + 2207027.

It is an arithmetic number, because the mean of its divisors is an integer number (4414050).

Almost surely, 2^13242147 is an apocalyptic number.

13242147 is a deficient number, since it is larger than the sum of its proper divisors (4414053).

13242147 is an equidigital number, since it uses as much as digits as its factorization.

13242147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4414052.

The product of its digits is 1344, while the sum is 24.

The square root of 13242147 is about 3638.9760922545. The cubic root of 13242147 is about 236.5844165241.

Adding to 13242147 its reverse (74124231), we get a palindrome (87366378).

The spelling of 13242147 in words is "thirteen million, two hundred forty-two thousand, one hundred forty-seven".