342666239 has 2 divisors, whose sum is σ = 342666240. Its totient is φ = 342666238.

The previous prime is 342666199. The next prime is 342666283. The reversal of 342666239 is 932666243.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342666239 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 342666196 and 342666205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342606239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171333119 + 171333120.

It is an arithmetic number, because the mean of its divisors is an integer number (171333120).

Almost surely, 2^342666239 is an apocalyptic number.

342666239 is a deficient number, since it is larger than the sum of its proper divisors (1).

342666239 is an equidigital number, since it uses as much as digits as its factorization.

342666239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 41.

The square root of 342666239 is about 18511.2462843537. The cubic root of 342666239 is about 699.7728780167.

The spelling of 342666239 in words is "three hundred forty-two million, six hundred sixty-six thousand, two hundred thirty-nine".