42885866 has 12 divisors (see below), whose sum is σ = 68336358. Its totient is φ = 20181312.

The previous prime is 42885853. The next prime is 42885881. The reversal of 42885866 is 66858824.

42885866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 34562641 + 8323225 = 5879^2 + 2885^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42885866.

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 5 ways as a sum of consecutive naturals, for example, 36521 + ... + 37676.

Almost surely, 2^42885866 is an apocalyptic number.

42885866 is a deficient number, since it is larger than the sum of its proper divisors (25450492).

42885866 is a wasteful number, since it uses less digits than its factorization.

42885866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74233 (or 74216 counting only the distinct ones).

The product of its digits is 737280, while the sum is 47.

The square root of 42885866 is about 6548.7301059060. The cubic root of 42885866 is about 350.0295648495.

The spelling of 42885866 in words is "forty-two million, eight hundred eighty-five thousand, eight hundred sixty-six".