342225209 has 2 divisors, whose sum is σ = 342225210. Its totient is φ = 342225208.

The previous prime is 342225199. The next prime is 342225223. The reversal of 342225209 is 902522243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341695225 + 529984 = 18485^2 + 728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342225209 is a prime.

It is not a weakly prime, because it can be changed into another prime (342224209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171112604 + 171112605.

It is an arithmetic number, because the mean of its divisors is an integer number (171112605).

Almost surely, 2^342225209 is an apocalyptic number.

It is an amenable number.

342225209 is a deficient number, since it is larger than the sum of its proper divisors (1).

342225209 is an equidigital number, since it uses as much as digits as its factorization.

342225209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 342225209 is about 18499.3299608391. The cubic root of 342225209 is about 699.4725339346.

The spelling of 342225209 in words is "three hundred forty-two million, two hundred twenty-five thousand, two hundred nine".