342442205309 has 2 divisors, whose sum is σ = 342442205310. Its totient is φ = 342442205308.

The previous prime is 342442205293. The next prime is 342442205311. The reversal of 342442205309 is 903502244243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333993838084 + 8448367225 = 577922^2 + 91915^2 .

It is a cyclic number.

It is not a de Polignac number, because 342442205309 - 2⁴ = 342442205293 is a prime.

Together with 342442205311, 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 (342442235309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171221102654 + 171221102655.

It is an arithmetic number, because the mean of its divisors is an integer number (171221102655).

Almost surely, 2^342442205309 is an apocalyptic number.

It is an amenable number.

342442205309 is a deficient number, since it is larger than the sum of its proper divisors (1).

342442205309 is an equidigital number, since it uses as much as digits as its factorization.

342442205309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 342442205309 in words is "three hundred forty-two billion, four hundred forty-two million, two hundred five thousand, three hundred nine".