203240423240 has 32 divisors (see below), whose sum is σ = 457517852280. Its totient is φ = 81255831552.

The previous prime is 203240423231. The next prime is 203240423329. The reversal of 203240423240 is 42324042302.

It is a happy number.

203240423240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 179876077924 + 23364345316 = 424118^2 + 152854^2 .

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 7 ways as a sum of consecutive naturals, for example, 1178867 + ... + 1340226.

Almost surely, 2^203240423240 is an apocalyptic number.

203240423240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203240423240 is an abundant number, since it is smaller than the sum of its proper divisors (254277429040).

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

203240423240 is a wasteful number, since it uses less digits than its factorization.

203240423240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521121 (or 2521117 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 203240423240 its reverse (42324042302), we get a palindrome (245564465542).

The spelling of 203240423240 in words is "two hundred three billion, two hundred forty million, four hundred twenty-three thousand, two hundred forty".