13542243 has 16 divisors (see below), whose sum is σ = 21213696. Its totient is φ = 7575840.

The previous prime is 13542229. The next prime is 13542293. The reversal of 13542243 is 34224531.

It is not a de Polignac number, because 13542243 - 2⁴ = 13542227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13542293) 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 15 ways as a sum of consecutive naturals, for example, 15355 + ... + 16212.

It is an arithmetic number, because the mean of its divisors is an integer number (1325856).

Almost surely, 2^13542243 is an apocalyptic number.

13542243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13542243 is a deficient number, since it is larger than the sum of its proper divisors (7671453).

13542243 is a wasteful number, since it uses less digits than its factorization.

13542243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31594.

The product of its digits is 2880, while the sum is 24.

The square root of 13542243 is about 3679.9786684164. The cubic root of 13542243 is about 238.3582569118.

Adding to 13542243 its reverse (34224531), we get a palindrome (47766774).

The spelling of 13542243 in words is "thirteen million, five hundred forty-two thousand, two hundred forty-three".