20321203242 has 32 divisors (see below), whose sum is σ = 41244521472. Its totient is φ = 6673828464.

The previous prime is 20321203229. The next prime is 20321203313. The reversal of 20321203242 is 24230212302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127173 + ... + 238359.

It is an arithmetic number, because the mean of its divisors is an integer number (1288891296).

Almost surely, 2^20321203242 is an apocalyptic number.

20321203242 is an abundant number, since it is smaller than the sum of its proper divisors (20923318230).

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

20321203242 is a wasteful number, since it uses less digits than its factorization.

20321203242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111642.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20321203242 its reverse (24230212302), we get a palindrome (44551415544).

The spelling of 20321203242 in words is "twenty billion, three hundred twenty-one million, two hundred three thousand, two hundred forty-two".