42586439 has 12 divisors (see below), whose sum is σ = 50241168. Its totient is φ = 35985600.

The previous prime is 42586433. The next prime is 42586447. The reversal of 42586439 is 93468524.

It is not a de Polignac number, because 42586439 - 2¹⁶ = 42520903 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42586396 and 42586405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42586433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2642 + ... + 9599.

It is an arithmetic number, because the mean of its divisors is an integer number (4186764).

Almost surely, 2^42586439 is an apocalyptic number.

42586439 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

42586439 is a deficient number, since it is larger than the sum of its proper divisors (7654729).

42586439 is a wasteful number, since it uses less digits than its factorization.

42586439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12326 (or 12319 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 42586439 is about 6525.8286063917. The cubic root of 42586439 is about 349.2130318437.

The spelling of 42586439 in words is "forty-two million, five hundred eighty-six thousand, four hundred thirty-nine".