42878167 has 2 divisors, whose sum is σ = 42878168. Its totient is φ = 42878166.

The previous prime is 42878159. The next prime is 42878201. The reversal of 42878167 is 76187824.

42878167 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42878167 - 2³ = 42878159 is a prime.

It is equal to p_2597659 and since 42878167 and 2597659 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42878767) 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 as a sum of consecutive naturals, namely, 21439083 + 21439084.

It is an arithmetic number, because the mean of its divisors is an integer number (21439084).

Almost surely, 2^42878167 is an apocalyptic number.

42878167 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878167 is an equidigital number, since it uses as much as digits as its factorization.

42878167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 43.

The square root of 42878167 is about 6548.1422556325. The cubic root of 42878167 is about 350.0086174749.

The spelling of 42878167 in words is "forty-two million, eight hundred seventy-eight thousand, one hundred sixty-seven".