42609559 has 2 divisors, whose sum is σ = 42609560. Its totient is φ = 42609558.

The previous prime is 42609527. The next prime is 42609587. The reversal of 42609559 is 95590624.

42609559 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 not a de Polignac number, because 42609559 - 2⁵ = 42609527 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42600559) 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, 21304779 + 21304780.

It is an arithmetic number, because the mean of its divisors is an integer number (21304780).

Almost surely, 2^42609559 is an apocalyptic number.

42609559 is a deficient number, since it is larger than the sum of its proper divisors (1).

42609559 is an equidigital number, since it uses as much as digits as its factorization.

42609559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 42609559 is about 6527.5997885900. The cubic root of 42609559 is about 349.2762158435.

The spelling of 42609559 in words is "forty-two million, six hundred nine thousand, five hundred fifty-nine".