209242 has 8 divisors (see below), whose sum is σ = 342432. Its totient is φ = 95100.

The previous prime is 209233. The next prime is 209249. The reversal of 209242 is 242902.

It is a happy number.

209242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (209249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4734 + ... + 4777.

It is an arithmetic number, because the mean of its divisors is an integer number (42804).

2²⁰⁹²⁴² is an apocalyptic number.

209242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

209242 is a deficient number, since it is larger than the sum of its proper divisors (133190).

209242 is a wasteful number, since it uses less digits than its factorization.

209242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9524.

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

The square root of 209242 is about 457.4297760313. The cubic root of 209242 is about 59.3676175494.

The spelling of 209242 in words is "two hundred nine thousand, two hundred forty-two".