33042239 has 2 divisors, whose sum is σ = 33042240. Its totient is φ = 33042238.

The previous prime is 33042227. The next prime is 33042241. The reversal of 33042239 is 93224033.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33042239 - 2¹⁶ = 32976703 is a prime.

Together with 33042241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33042299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16521119 + 16521120.

It is an arithmetic number, because the mean of its divisors is an integer number (16521120).

Almost surely, 2^33042239 is an apocalyptic number.

33042239 is a deficient number, since it is larger than the sum of its proper divisors (1).

33042239 is an equidigital number, since it uses as much as digits as its factorization.

33042239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 33042239 is about 5748.2379039146. The cubic root of 33042239 is about 320.8902262106.

The spelling of 33042239 in words is "thirty-three million, forty-two thousand, two hundred thirty-nine".