243221041 has 8 divisors (see below), whose sum is σ = 278290880. Its totient is φ = 208232208.

The previous prime is 243221039. The next prime is 243221047. The reversal of 243221041 is 140122342.

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

It is a cyclic number.

It is not a de Polignac number, because 243221041 - 2¹ = 243221039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243221047) 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, 13671 + ... + 25948.

It is an arithmetic number, because the mean of its divisors is an integer number (34786360).

Almost surely, 2^243221041 is an apocalyptic number.

It is an amenable number.

243221041 is a deficient number, since it is larger than the sum of its proper divisors (35069839).

243221041 is an equidigital number, since it uses as much as digits as its factorization.

243221041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40503.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 243221041 is about 15595.5455499319. The cubic root of 243221041 is about 624.2143010173.

Adding to 243221041 its reverse (140122342), we get a palindrome (383343383).

The spelling of 243221041 in words is "two hundred forty-three million, two hundred twenty-one thousand, forty-one".