42608563 has 2 divisors, whose sum is σ = 42608564. Its totient is φ = 42608562.

The previous prime is 42608551. The next prime is 42608593. The reversal of 42608563 is 36580624.

It is a happy number.

42608563 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-42608563 is a prime.

It is not a weakly prime, because it can be changed into another prime (42608513) 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, 21304281 + 21304282.

It is an arithmetic number, because the mean of its divisors is an integer number (21304282).

Almost surely, 2^42608563 is an apocalyptic number.

42608563 is a deficient number, since it is larger than the sum of its proper divisors (1).

42608563 is an equidigital number, since it uses as much as digits as its factorization.

42608563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 42608563 is about 6527.5234967023. The cubic root of 42608563 is about 349.2734943742.

The spelling of 42608563 in words is "forty-two million, six hundred eight thousand, five hundred sixty-three".