20202320242 has 16 divisors (see below), whose sum is σ = 32643643032. Its totient is φ = 9321540480.

The previous prime is 20202320233. The next prime is 20202320261. The reversal of 20202320242 is 24202320202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2641034881 + 17561285361 = 51391^2 + 132519^2 .

It is an unprimeable number.

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, 12259 + ... + 201382.

Almost surely, 2^20202320242 is an apocalyptic number.

20202320242 is a deficient number, since it is larger than the sum of its proper divisors (12441322790).

20202320242 is a wasteful number, since it uses less digits than its factorization.

20202320242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217293.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 20202320242 its reverse (24202320202), we get a palindrome (44404640444).

The spelling of 20202320242 in words is "twenty billion, two hundred two million, three hundred twenty thousand, two hundred forty-two".