20304203142 has 16 divisors (see below), whose sum is σ = 40642805232. Its totient is φ = 6762334560.

The previous prime is 20304203141. The next prime is 20304203159. The reversal of 20304203142 is 24130240302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20304203141) 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, 1425613 + ... + 1439784.

It is an arithmetic number, because the mean of its divisors is an integer number (2540175327).

Almost surely, 2^20304203142 is an apocalyptic number.

20304203142 is an abundant number, since it is smaller than the sum of its proper divisors (20338602090).

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

20304203142 is a wasteful number, since it uses less digits than its factorization.

20304203142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866583.

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

Adding to 20304203142 its reverse (24130240302), we get a palindrome (44434443444).

It can be divided in two parts, 20304 and 203142, that added together give a triangular number (223446 = T₆₆₈).

The spelling of 20304203142 in words is "twenty billion, three hundred four million, two hundred three thousand, one hundred forty-two".