243004241 has 4 divisors (see below), whose sum is σ = 248174592. Its totient is φ = 237833892.

The previous prime is 243004231. The next prime is 243004291. The reversal of 243004241 is 142400342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243004241 is a prime.

It is a super-2 number, since 2×243004241² = 118102122287972162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243004211) 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, 2585105 + ... + 2585198.

It is an arithmetic number, because the mean of its divisors is an integer number (62043648).

Almost surely, 2^243004241 is an apocalyptic number.

It is an amenable number.

243004241 is a deficient number, since it is larger than the sum of its proper divisors (5170351).

243004241 is an equidigital number, since it uses as much as digits as its factorization.

243004241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170350.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 243004241 is about 15588.5932976648. The cubic root of 243004241 is about 624.0287771971.

Adding to 243004241 its reverse (142400342), we get a palindrome (385404583).

The spelling of 243004241 in words is "two hundred forty-three million, four thousand, two hundred forty-one".