42586939 has 2 divisors, whose sum is σ = 42586940. Its totient is φ = 42586938.

The previous prime is 42586937. The next prime is 42586981. The reversal of 42586939 is 93968524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42586939 - 2¹ = 42586937 is a prime.

Together with 42586937, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42586937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21293469 + 21293470.

It is an arithmetic number, because the mean of its divisors is an integer number (21293470).

Almost surely, 2^42586939 is an apocalyptic number.

42586939 is a deficient number, since it is larger than the sum of its proper divisors (1).

42586939 is an equidigital number, since it uses as much as digits as its factorization.

42586939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 42586939 is about 6525.8669155906. The cubic root of 42586939 is about 349.2143985216.

The spelling of 42586939 in words is "forty-two million, five hundred eighty-six thousand, nine hundred thirty-nine".