42005339 has 2 divisors, whose sum is σ = 42005340. Its totient is φ = 42005338.

The previous prime is 42005303. The next prime is 42005347. The reversal of 42005339 is 93350024.

42005339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42005339 - 2²⁰ = 40956763 is a prime.

It is not a weakly prime, because it can be changed into another prime (42005389) 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 as a sum of consecutive naturals, namely, 21002669 + 21002670.

It is an arithmetic number, because the mean of its divisors is an integer number (21002670).

Almost surely, 2^42005339 is an apocalyptic number.

42005339 is a deficient number, since it is larger than the sum of its proper divisors (1).

42005339 is an equidigital number, since it uses as much as digits as its factorization.

42005339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 42005339 is about 6481.1525981109. The cubic root of 42005339 is about 347.6173928378.

The spelling of 42005339 in words is "forty-two million, five thousand, three hundred thirty-nine".