42028339 has 2 divisors, whose sum is σ = 42028340. Its totient is φ = 42028338.

The previous prime is 42028333. The next prime is 42028351. The reversal of 42028339 is 93382024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42028339 - 2³ = 42028331 is a prime.

It is a Chen prime.

It is equal to p_2549218 and since 42028339 and 2549218 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42028339.

It is not a weakly prime, because it can be changed into another prime (42028331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21014169 + 21014170.

It is an arithmetic number, because the mean of its divisors is an integer number (21014170).

Almost surely, 2^42028339 is an apocalyptic number.

42028339 is a deficient number, since it is larger than the sum of its proper divisors (1).

42028339 is an equidigital number, since it uses as much as digits as its factorization.

42028339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 42028339 is about 6482.9267310375. The cubic root of 42028339 is about 347.6808271647.

The spelling of 42028339 in words is "forty-two million, twenty-eight thousand, three hundred thirty-nine".