42839611 has 2 divisors, whose sum is σ = 42839612. Its totient is φ = 42839610.

The previous prime is 42839603. The next prime is 42839647. The reversal of 42839611 is 11693824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42839611 - 2³ = 42839603 is a prime.

It is not a weakly prime, because it can be changed into another prime (42839011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21419805 + 21419806.

It is an arithmetic number, because the mean of its divisors is an integer number (21419806).

Almost surely, 2^42839611 is an apocalyptic number.

42839611 is a deficient number, since it is larger than the sum of its proper divisors (1).

42839611 is an equidigital number, since it uses as much as digits as its factorization.

42839611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 42839611 is about 6545.1975524044. The cubic root of 42839611 is about 349.9036768948.

The spelling of 42839611 in words is "forty-two million, eight hundred thirty-nine thousand, six hundred eleven".