42542167 has 2 divisors, whose sum is σ = 42542168. Its totient is φ = 42542166.

The previous prime is 42542161. The next prime is 42542209. The reversal of 42542167 is 76124524.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42542167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42542161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21271083 + 21271084.

It is an arithmetic number, because the mean of its divisors is an integer number (21271084).

Almost surely, 2^42542167 is an apocalyptic number.

42542167 is a deficient number, since it is larger than the sum of its proper divisors (1).

42542167 is an equidigital number, since it uses as much as digits as its factorization.

42542167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 31.

The square root of 42542167 is about 6522.4356646885. The cubic root of 42542167 is about 349.0919782859.

The spelling of 42542167 in words is "forty-two million, five hundred forty-two thousand, one hundred sixty-seven".