202440004243 has 4 divisors (see below), whose sum is σ = 202461727608. Its totient is φ = 202418280880.

The previous prime is 202440004219. The next prime is 202440004253. The reversal of 202440004243 is 342400044202.

202440004243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202440004243 - 2¹⁷ = 202439873171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202440004253) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10847698 + ... + 10866343.

It is an arithmetic number, because the mean of its divisors is an integer number (50615431902).

Almost surely, 2^202440004243 is an apocalyptic number.

202440004243 is a deficient number, since it is larger than the sum of its proper divisors (21723365).

202440004243 is an equidigital number, since it uses as much as digits as its factorization.

202440004243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21723364.

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 202440004243 its reverse (342400044202), we get a palindrome (544840048445).

The spelling of 202440004243 in words is "two hundred two billion, four hundred forty million, four thousand, two hundred forty-three".