42178163 has 2 divisors, whose sum is σ = 42178164. Its totient is φ = 42178162.

The previous prime is 42178153. The next prime is 42178177. The reversal of 42178163 is 36187124.

42178163 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 a de Polignac number, because none of the positive numbers 2^k-42178163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42178153) 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, 21089081 + 21089082.

It is an arithmetic number, because the mean of its divisors is an integer number (21089082).

Almost surely, 2^42178163 is an apocalyptic number.

42178163 is a deficient number, since it is larger than the sum of its proper divisors (1).

42178163 is an equidigital number, since it uses as much as digits as its factorization.

42178163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 42178163 is about 6494.4717260144. The cubic root of 42178163 is about 348.0934785431.

The spelling of 42178163 in words is "forty-two million, one hundred seventy-eight thousand, one hundred sixty-three".