202400200243 has 4 divisors (see below), whose sum is σ = 207107181688. Its totient is φ = 197693218800.

The previous prime is 202400200241. The next prime is 202400200273. The reversal of 202400200243 is 342002004202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342002004202 = 2 ⋅171001002101.

It is a cyclic number.

It is not a de Polignac number, because 202400200243 - 2¹ = 202400200241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202400200243.

It is not an unprimeable number, because it can be changed into a prime (202400200241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2353490658 + ... + 2353490743.

It is an arithmetic number, because the mean of its divisors is an integer number (51776795422).

Almost surely, 2^202400200243 is an apocalyptic number.

202400200243 is a deficient number, since it is larger than the sum of its proper divisors (4706981445).

202400200243 is an equidigital number, since it uses as much as digits as its factorization.

202400200243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4706981444.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 202400200243 its reverse (342002004202), we get a palindrome (544402204445).

The spelling of 202400200243 in words is "two hundred two billion, four hundred million, two hundred thousand, two hundred forty-three".