42440113 has 2 divisors, whose sum is σ = 42440114. Its totient is φ = 42440112.

The previous prime is 42440093. The next prime is 42440149. The reversal of 42440113 is 31104424.

42440113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39025009 + 3415104 = 6247^2 + 1848^2 .

It is a cyclic number.

It is not a de Polignac number, because 42440113 - 2⁹ = 42439601 is a prime.

It is not a weakly prime, because it can be changed into another prime (42440173) 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 as a sum of consecutive naturals, namely, 21220056 + 21220057.

It is an arithmetic number, because the mean of its divisors is an integer number (21220057).

Almost surely, 2^42440113 is an apocalyptic number.

It is an amenable number.

42440113 is a deficient number, since it is larger than the sum of its proper divisors (1).

42440113 is an equidigital number, since it uses as much as digits as its factorization.

42440113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 42440113 is about 6514.6076627837. The cubic root of 42440113 is about 348.8126102995.

Adding to 42440113 its reverse (31104424), we get a palindrome (73544537).

The spelling of 42440113 in words is "forty-two million, four hundred forty thousand, one hundred thirteen".