42168563 has 2 divisors, whose sum is σ = 42168564. Its totient is φ = 42168562.

The previous prime is 42168557. The next prime is 42168601. The reversal of 42168563 is 36586124.

42168563 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 42168563 - 2⁴ = 42168547 is a prime.

It is not a weakly prime, because it can be changed into another prime (42162563) 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, 21084281 + 21084282.

It is an arithmetic number, because the mean of its divisors is an integer number (21084282).

Almost surely, 2^42168563 is an apocalyptic number.

42168563 is a deficient number, since it is larger than the sum of its proper divisors (1).

42168563 is an equidigital number, since it uses as much as digits as its factorization.

42168563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 42168563 is about 6493.7325938169. The cubic root of 42168563 is about 348.0670671593.

The spelling of 42168563 in words is "forty-two million, one hundred sixty-eight thousand, five hundred sixty-three".