42434178 has 8 divisors (see below), whose sum is σ = 84868368. Its totient is φ = 14144724.

The previous prime is 42434173. The next prime is 42434209. The reversal of 42434178 is 87143424.

42434178 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

42434178 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42434173) 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 3 ways as a sum of consecutive naturals, for example, 3536176 + ... + 3536187.

It is an arithmetic number, because the mean of its divisors is an integer number (10608546).

Almost surely, 2^42434178 is an apocalyptic number.

42434178 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42434178 is a wasteful number, since it uses less digits than its factorization.

42434178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7072368.

The product of its digits is 21504, while the sum is 33.

The square root of 42434178 is about 6514.1521320890. The cubic root of 42434178 is about 348.7963497447.

The spelling of 42434178 in words is "forty-two million, four hundred thirty-four thousand, one hundred seventy-eight".