42881894 has 16 divisors (see below), whose sum is σ = 72591120. Its totient is φ = 18819360.

The previous prime is 42881819. The next prime is 42881899. The reversal of 42881894 is 49818824.

It is a happy number.

42881894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42881899) 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 in 7 ways as a sum of consecutive naturals, for example, 32969 + ... + 34244.

It is an arithmetic number, because the mean of its divisors is an integer number (4536945).

Almost surely, 2^42881894 is an apocalyptic number.

42881894 is a deficient number, since it is larger than the sum of its proper divisors (29709226).

42881894 is a wasteful number, since it uses less digits than its factorization.

42881894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67255.

The product of its digits is 147456, while the sum is 44.

The square root of 42881894 is about 6548.4268339808. The cubic root of 42881894 is about 350.0187581783.

The spelling of 42881894 in words is "forty-two million, eight hundred eighty-one thousand, eight hundred ninety-four".