13305642 has 16 divisors (see below), whose sum is σ = 30412992. Its totient is φ = 3801600.

The previous prime is 13305641. The next prime is 13305659. The reversal of 13305642 is 24650331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13305641) 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 7 ways as a sum of consecutive naturals, for example, 158359 + ... + 158442.

It is an arithmetic number, because the mean of its divisors is an integer number (1900812).

Almost surely, 2^13305642 is an apocalyptic number.

13305642 is an abundant number, since it is smaller than the sum of its proper divisors (17107350).

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

13305642 is a wasteful number, since it uses less digits than its factorization.

13305642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316813.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 13305642 is about 3647.6899539297. The cubic root of 13305642 is about 236.9619479936.

Adding to 13305642 its reverse (24650331), we get a palindrome (37955973).

The spelling of 13305642 in words is "thirteen million, three hundred five thousand, six hundred forty-two".