42564659 has 2 divisors, whose sum is σ = 42564660. Its totient is φ = 42564658.

The previous prime is 42564611. The next prime is 42564701. The reversal of 42564659 is 95646524.

It is a happy number.

42564659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42564659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42564059) 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, 21282329 + 21282330.

It is an arithmetic number, because the mean of its divisors is an integer number (21282330).

Almost surely, 2^42564659 is an apocalyptic number.

42564659 is a deficient number, since it is larger than the sum of its proper divisors (1).

42564659 is an equidigital number, since it uses as much as digits as its factorization.

42564659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 41.

The square root of 42564659 is about 6524.1596393712. The cubic root of 42564659 is about 349.1534889704.

The spelling of 42564659 in words is "forty-two million, five hundred sixty-four thousand, six hundred fifty-nine".