13216542 has 16 divisors (see below), whose sum is σ = 26768640. Its totient is φ = 4349592.

The previous prime is 13216519. The next prime is 13216543. The reversal of 13216542 is 24561231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13216543) 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 7 ways as a sum of consecutive naturals, for example, 13468 + ... + 14415.

It is an arithmetic number, because the mean of its divisors is an integer number (1673040).

Almost surely, 2^13216542 is an apocalyptic number.

13216542 is an abundant number, since it is smaller than the sum of its proper divisors (13552098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13216542 is a wasteful number, since it uses less digits than its factorization.

13216542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27967.

The product of its digits is 1440, while the sum is 24.

The square root of 13216542 is about 3635.4562299662. The cubic root of 13216542 is about 236.4318316852.

Adding to 13216542 its reverse (24561231), we get a palindrome (37777773).

The spelling of 13216542 in words is "thirteen million, two hundred sixteen thousand, five hundred forty-two".