113242561 has 8 divisors (see below), whose sum is σ = 114080000. Its totient is φ = 112408560.

The previous prime is 113242537. The next prime is 113242567. The reversal of 113242561 is 165242311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113242561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113242567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113776 + ... + 114766.

It is an arithmetic number, because the mean of its divisors is an integer number (14260000).

Almost surely, 2^113242561 is an apocalyptic number.

It is an amenable number.

113242561 is a deficient number, since it is larger than the sum of its proper divisors (837439).

113242561 is an equidigital number, since it uses as much as digits as its factorization.

113242561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719.

The product of its digits is 1440, while the sum is 25.

The square root of 113242561 is about 10641.5488064473. The cubic root of 113242561 is about 483.8044895410.

Adding to 113242561 its reverse (165242311), we get a palindrome (278484872).

The spelling of 113242561 in words is "one hundred thirteen million, two hundred forty-two thousand, five hundred sixty-one".