202043243 has 4 divisors (see below), whose sum is σ = 202349568. Its totient is φ = 201736920.

The previous prime is 202043239. The next prime is 202043251. The reversal of 202043243 is 342340202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342340202 = 2 ⋅171170101.

It is a cyclic number.

It is not a de Polignac number, because 202043243 - 2² = 202043239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202343243) 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, 152171 + ... + 153492.

It is an arithmetic number, because the mean of its divisors is an integer number (50587392).

Almost surely, 2^202043243 is an apocalyptic number.

202043243 is a deficient number, since it is larger than the sum of its proper divisors (306325).

202043243 is an equidigital number, since it uses as much as digits as its factorization.

202043243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306324.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 202043243 is about 14214.1916055750. The cubic root of 202043243 is about 586.7882969591.

Adding to 202043243 its reverse (342340202), we get a palindrome (544383445).

The spelling of 202043243 in words is "two hundred two million, forty-three thousand, two hundred forty-three".