42608565 has 32 divisors (see below), whose sum is σ = 76018560. Its totient is φ = 22643712.

The previous prime is 42608563. The next prime is 42608593. The reversal of 42608565 is 56580624.

42608565 is a `hidden beast` number, since 42 + 608 + 5 + 6 + 5 = 666.

42608565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42608565 - 2¹ = 42608563 is a prime.

It is a super-2 number, since 2×42608565² = 3630979622718450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42608563) 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 in 31 ways as a sum of consecutive naturals, for example, 73557 + ... + 74133.

It is an arithmetic number, because the mean of its divisors is an integer number (2375580).

Almost surely, 2^42608565 is an apocalyptic number.

42608565 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42608565 is a deficient number, since it is larger than the sum of its proper divisors (33409995).

42608565 is a wasteful number, since it uses less digits than its factorization.

42608565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 42608565 is about 6527.5236498997. The cubic root of 42608565 is about 349.2734998390.

The spelling of 42608565 in words is "forty-two million, six hundred eight thousand, five hundred sixty-five".