342209 has 16 divisors (see below), whose sum is σ = 430080. Its totient is φ = 265680.

The previous prime is 342203. The next prime is 342211. The reversal of 342209 is 902243.

It is a cyclic number.

It is not a de Polignac number, because 342209 - 2⁸ = 341953 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342209.

It is not an unprimeable number, because it can be changed into a prime (342203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4082 + ... + 4164.

It is an arithmetic number, because the mean of its divisors is an integer number (26880).

2³⁴²²⁰⁹ is an apocalyptic number.

It is an amenable number.

342209 is a deficient number, since it is larger than the sum of its proper divisors (87871).

342209 is a wasteful number, since it uses less digits than its factorization.

342209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 342209 is about 584.9863246265. The cubic root of 342209 is about 69.9461490593.

The spelling of 342209 in words is "three hundred forty-two thousand, two hundred nine".