206042423820 has 48 divisors (see below), whose sum is σ = 576943976448. Its totient is φ = 54942247360.

The previous prime is 206042423801. The next prime is 206042423827. The reversal of 206042423820 is 28324240602.

It is not an unprimeable number, because it can be changed into a prime (206042423827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1631797 + ... + 1753523.

It is an arithmetic number, because the mean of its divisors is an integer number (12019666176).

Almost surely, 2^206042423820 is an apocalyptic number.

206042423820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206042423820 is an abundant number, since it is smaller than the sum of its proper divisors (370901552628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206042423820 is a wasteful number, since it uses less digits than its factorization.

206042423820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149950 (or 149948 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The spelling of 206042423820 in words is "two hundred six billion, forty-two million, four hundred twenty-three thousand, eight hundred twenty".