206442054124 has 24 divisors (see below), whose sum is σ = 361917586800. Its totient is φ = 103037114880.

The previous prime is 206442054121. The next prime is 206442054151. The reversal of 206442054124 is 421450244602.

It is a self number, because there is not a number n which added to its sum of digits gives 206442054124.

It is not an unprimeable number, because it can be changed into a prime (206442054121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13090404 + ... + 13106164.

It is an arithmetic number, because the mean of its divisors is an integer number (15079899450).

Almost surely, 2^206442054124 is an apocalyptic number.

It is an amenable number.

206442054124 is a deficient number, since it is larger than the sum of its proper divisors (155475532676).

206442054124 is a wasteful number, since it uses less digits than its factorization.

206442054124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21393 (or 21391 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 206442054124 its reverse (421450244602), we get a palindrome (627892298726).

The spelling of 206442054124 in words is "two hundred six billion, four hundred forty-two million, fifty-four thousand, one hundred twenty-four".