243020441 has 4 divisors (see below), whose sum is σ = 243144372. Its totient is φ = 242896512.

The previous prime is 243020413. The next prime is 243020447. The reversal of 243020441 is 144020342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101505625 + 141514816 = 10075^2 + 11896^2 .

It is a cyclic number.

It is not a de Polignac number, because 243020441 - 2¹⁴ = 243004057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243020447) 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, 58976 + ... + 62961.

It is an arithmetic number, because the mean of its divisors is an integer number (60786093).

Almost surely, 2^243020441 is an apocalyptic number.

It is an amenable number.

243020441 is a deficient number, since it is larger than the sum of its proper divisors (123931).

243020441 is a wasteful number, since it uses less digits than its factorization.

243020441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123930.

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

The square root of 243020441 is about 15589.1128997131. The cubic root of 243020441 is about 624.0426439531.

Adding to 243020441 its reverse (144020342), we get a palindrome (387040783).

Subtracting from 243020441 its reverse (144020342), we obtain a palindrome (99000099).

The spelling of 243020441 in words is "two hundred forty-three million, twenty thousand, four hundred forty-one".