42608559 has 16 divisors (see below), whose sum is σ = 65204480. Its totient is φ = 24243840.

The previous prime is 42608551. The next prime is 42608563. The reversal of 42608559 is 95580624.

It is not a de Polignac number, because 42608559 - 2³ = 42608551 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42608551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852 + ... + 9270.

It is an arithmetic number, because the mean of its divisors is an integer number (4075280).

Almost surely, 2^42608559 is an apocalyptic number.

42608559 is a deficient number, since it is larger than the sum of its proper divisors (22595921).

42608559 is a wasteful number, since it uses less digits than its factorization.

42608559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 42608559 is about 6527.5231903073. The cubic root of 42608559 is about 349.2734834445.

The spelling of 42608559 in words is "forty-two million, six hundred eight thousand, five hundred fifty-nine".