243404241 has 8 divisors (see below), whose sum is σ = 333310464. Its totient is φ = 157883760.

The previous prime is 243404207. The next prime is 243404251. The reversal of 243404241 is 142404342.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243404241 - 2⁶ = 243404177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243404251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096305 + ... + 1096526.

It is an arithmetic number, because the mean of its divisors is an integer number (41663808).

Almost surely, 2^243404241 is an apocalyptic number.

It is an amenable number.

243404241 is a deficient number, since it is larger than the sum of its proper divisors (89906223).

243404241 is a wasteful number, since it uses less digits than its factorization.

243404241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192871.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 243404241 is about 15601.4179163306. The cubic root of 243404241 is about 624.3709861456.

Adding to 243404241 its reverse (142404342), we get a palindrome (385808583).

The spelling of 243404241 in words is "two hundred forty-three million, four hundred four thousand, two hundred forty-one".