203242121340 has 48 divisors (see below), whose sum is σ = 572569243008. Its totient is φ = 53865393984.

The previous prime is 203242121321. The next prime is 203242121389. The reversal of 203242121340 is 43121242302.

It is a happy number.

203242121340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 203242121340.

It is a congruent number.

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, 10380922 + ... + 10400481.

It is an arithmetic number, because the mean of its divisors is an integer number (11928525896).

Almost surely, 2^203242121340 is an apocalyptic number.

203242121340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203242121340 is an abundant number, since it is smaller than the sum of its proper divisors (369327121668).

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

203242121340 is a wasteful number, since it uses less digits than its factorization.

203242121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20781578 (or 20781576 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 203242121340 its reverse (43121242302), we get a palindrome (246363363642).

The spelling of 203242121340 in words is "two hundred three billion, two hundred forty-two million, one hundred twenty-one thousand, three hundred forty".