42581075 has 12 divisors (see below), whose sum is σ = 53439288. Its totient is φ = 33652800.

The previous prime is 42581047. The next prime is 42581081. The reversal of 42581075 is 57018524.

42581075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42581075 - 2²² = 38386771 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 8186 + ... + 12335.

It is an arithmetic number, because the mean of its divisors is an integer number (4453274).

Almost surely, 2^42581075 is an apocalyptic number.

42581075 is a deficient number, since it is larger than the sum of its proper divisors (10858213).

42581075 is a wasteful number, since it uses less digits than its factorization.

42581075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20614 (or 20609 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 42581075 is about 6525.4176111572. The cubic root of 42581075 is about 349.1983694504.

Adding to 42581075 its reverse (57018524), we get a palindrome (99599599).

The spelling of 42581075 in words is "forty-two million, five hundred eighty-one thousand, seventy-five".