13531242 has 16 divisors (see below), whose sum is σ = 27181440. Its totient is φ = 4490592.

The previous prime is 13531229. The next prime is 13531277. The reversal of 13531242 is 24213531.

It is an unprimeable number.

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, 3442 + ... + 6237.

It is an arithmetic number, because the mean of its divisors is an integer number (1698840).

Almost surely, 2^13531242 is an apocalyptic number.

13531242 is an abundant number, since it is smaller than the sum of its proper divisors (13650198).

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

13531242 is a wasteful number, since it uses less digits than its factorization.

13531242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9917.

The product of its digits is 720, while the sum is 21.

The square root of 13531242 is about 3678.4836549861. The cubic root of 13531242 is about 238.2936962246.

Adding to 13531242 its reverse (24213531), we get a palindrome (37744773).

The spelling of 13531242 in words is "thirteen million, five hundred thirty-one thousand, two hundred forty-two".