206342 has 4 divisors (see below), whose sum is σ = 309516. Its totient is φ = 103170.

The previous prime is 206341. The next prime is 206347. The reversal of 206342 is 243602.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 206342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51584 + ... + 51587.

It is an arithmetic number, because the mean of its divisors is an integer number (77379).

2²⁰⁶³⁴² is an apocalyptic number.

206342 is a deficient number, since it is larger than the sum of its proper divisors (103174).

206342 is a wasteful number, since it uses less digits than its factorization.

206342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103173.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 206342 is about 454.2488304883. The cubic root of 206342 is about 59.0920711265.

Adding to 206342 its reverse (243602), we get a palindrome (449944).

The spelling of 206342 in words is "two hundred six thousand, three hundred forty-two".