342239879 has 2 divisors, whose sum is σ = 342239880. Its totient is φ = 342239878.

The previous prime is 342239873. The next prime is 342239897. The reversal of 342239879 is 978932243.

Together with next prime (342239897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 342239879 - 2¹² = 342235783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342239873) 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, 171119939 + 171119940.

It is an arithmetic number, because the mean of its divisors is an integer number (171119940).

Almost surely, 2^342239879 is an apocalyptic number.

342239879 is a deficient number, since it is larger than the sum of its proper divisors (1).

342239879 is an equidigital number, since it uses as much as digits as its factorization.

342239879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 342239879 is about 18499.7264574371. The cubic root of 342239879 is about 699.4825284403.

The spelling of 342239879 in words is "three hundred forty-two million, two hundred thirty-nine thousand, eight hundred seventy-nine".