42608439 has 12 divisors (see below), whose sum is σ = 62555272. Its totient is φ = 27939600.

The previous prime is 42608429. The next prime is 42608441. The reversal of 42608439 is 93480624.

It is a happy number.

42608439 is a `hidden beast` number, since 4 + 2 + 608 + 43 + 9 = 666.

42608439 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 42608439 - 2⁹ = 42607927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42608429) 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 11 ways as a sum of consecutive naturals, for example, 38257 + ... + 39354.

Almost surely, 2^42608439 is an apocalyptic number.

42608439 is a deficient number, since it is larger than the sum of its proper divisors (19946833).

42608439 is a wasteful number, since it uses less digits than its factorization.

42608439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77678 (or 77675 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 42608439 is about 6527.5139984530. The cubic root of 42608439 is about 349.2731555537.

The spelling of 42608439 in words is "forty-two million, six hundred eight thousand, four hundred thirty-nine".