320042339 has 2 divisors, whose sum is σ = 320042340. Its totient is φ = 320042338.

The previous prime is 320042311. The next prime is 320042353. The reversal of 320042339 is 933240023.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320042339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320042389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160021169 + 160021170.

It is an arithmetic number, because the mean of its divisors is an integer number (160021170).

Almost surely, 2^320042339 is an apocalyptic number.

320042339 is a deficient number, since it is larger than the sum of its proper divisors (1).

320042339 is an equidigital number, since it uses as much as digits as its factorization.

320042339 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 320042339 is about 17889.7271918831. The cubic root of 320042339 is about 684.0205434535.

It can be divided in two parts, 32004 and 2339, that added together give a palindrome (34343).

The spelling of 320042339 in words is "three hundred twenty million, forty-two thousand, three hundred thirty-nine".