206022242 has 4 divisors (see below), whose sum is σ = 309033366. Its totient is φ = 103011120.

The previous prime is 206022239. The next prime is 206022281. The reversal of 206022242 is 242220602.

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

It can be written as a sum of positive squares in only one way, i.e., 172370641 + 33651601 = 13129^2 + 5801^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51505559 + ... + 51505562.

Almost surely, 2^206022242 is an apocalyptic number.

206022242 is a deficient number, since it is larger than the sum of its proper divisors (103011124).

206022242 is a wasteful number, since it uses less digits than its factorization.

206022242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103011123.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 206022242 is about 14353.4749102787. The cubic root of 206022242 is about 590.6153132497.

Adding to 206022242 its reverse (242220602), we get a palindrome (448242844).

The spelling of 206022242 in words is "two hundred six million, twenty-two thousand, two hundred forty-two".