242209 has 8 divisors (see below), whose sum is σ = 268128. Its totient is φ = 216960.

The previous prime is 242201. The next prime is 242227. The reversal of 242209 is 902242.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242209 - 2³ = 242201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (33516).

2²⁴²²⁰⁹ is an apocalyptic number.

It is an amenable number.

242209 is a deficient number, since it is larger than the sum of its proper divisors (25919).

242209 is a wasteful number, since it uses less digits than its factorization.

242209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 242209 is about 492.1473356628. The cubic root of 242209 is about 62.3347313657.

The spelling of 242209 in words is "two hundred forty-two thousand, two hundred nine".