206445242 has 4 divisors (see below), whose sum is σ = 309667866. Its totient is φ = 103222620.

The previous prime is 206445227. The next prime is 206445251. The reversal of 206445242 is 242544602.

206445242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 109599961 + 96845281 = 10469^2 + 9841^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51611309 + ... + 51611312.

Almost surely, 2^206445242 is an apocalyptic number.

206445242 is a deficient number, since it is larger than the sum of its proper divisors (103222624).

206445242 is a wasteful number, since it uses less digits than its factorization.

206445242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103222623.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 206445242 is about 14368.2024623820. The cubic root of 206445242 is about 591.0192493943.

Adding to 206445242 its reverse (242544602), we get a palindrome (448989844).

The spelling of 206445242 in words is "two hundred six million, four hundred forty-five thousand, two hundred forty-two".