243001120441 has 4 divisors (see below), whose sum is σ = 243177082084. Its totient is φ = 242825158800.

The previous prime is 243001120433. The next prime is 243001120457. The reversal of 243001120441 is 144021100342.

It is a happy number.

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 203328846400 + 39672274041 = 450920^2 + 199179^2 .

It is a cyclic number.

It is not a de Polignac number, because 243001120441 - 2³ = 243001120433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243001120471) 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, 87978750 + ... + 87981511.

It is an arithmetic number, because the mean of its divisors is an integer number (60794270521).

Almost surely, 2^243001120441 is an apocalyptic number.

It is an amenable number.

243001120441 is a deficient number, since it is larger than the sum of its proper divisors (175961643).

243001120441 is a wasteful number, since it uses less digits than its factorization.

243001120441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175961642.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 243001120441 its reverse (144021100342), we get a palindrome (387022220783).

The spelling of 243001120441 in words is "two hundred forty-three billion, one million, one hundred twenty thousand, four hundred forty-one".