42302539 has 2 divisors, whose sum is σ = 42302540. Its totient is φ = 42302538.

The previous prime is 42302521. The next prime is 42302549. The reversal of 42302539 is 93520324.

42302539 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 42302539 - 2¹¹ = 42300491 is a prime.

It is not a weakly prime, because it can be changed into another prime (42302549) 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, 21151269 + 21151270.

It is an arithmetic number, because the mean of its divisors is an integer number (21151270).

Almost surely, 2^42302539 is an apocalyptic number.

42302539 is a deficient number, since it is larger than the sum of its proper divisors (1).

42302539 is an equidigital number, since it uses as much as digits as its factorization.

42302539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 42302539 is about 6504.0402059028. The cubic root of 42302539 is about 348.4352982989.

The spelling of 42302539 in words is "forty-two million, three hundred two thousand, five hundred thirty-nine".