42185078 has 16 divisors (see below), whose sum is σ = 68328960. Its totient is φ = 19417536.

The previous prime is 42185063. The next prime is 42185081. The reversal of 42185078 is 87058124.

42185078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 8651 + ... + 12617.

It is an arithmetic number, because the mean of its divisors is an integer number (4270560).

Almost surely, 2^42185078 is an apocalyptic number.

42185078 is a deficient number, since it is larger than the sum of its proper divisors (26143882).

42185078 is a wasteful number, since it uses less digits than its factorization.

42185078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 42185078 is about 6495.0040800603. The cubic root of 42185078 is about 348.1125005101.

The spelling of 42185078 in words is "forty-two million, one hundred eighty-five thousand, seventy-eight".