243120244441 has 6 divisors (see below), whose sum is σ = 256589510442. Its totient is φ = 230324441760.

The previous prime is 243120244373. The next prime is 243120244447. The reversal of 243120244441 is 144442021342.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 242817345225 + 302899216 = 492765^2 + 17404^2 .

It is a de Polignac number, because none of the positive numbers 2^k-243120244441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243120244447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 336731280 + ... + 336732001.

It is an arithmetic number, because the mean of its divisors is an integer number (42764918407).

Almost surely, 2^243120244441 is an apocalyptic number.

It is an amenable number.

243120244441 is a deficient number, since it is larger than the sum of its proper divisors (13469266001).

243120244441 is an equidigital number, since it uses as much as digits as its factorization.

243120244441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673463319 (or 673463300 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 243120244441 its reverse (144442021342), we get a palindrome (387562265783).

The spelling of 243120244441 in words is "two hundred forty-three billion, one hundred twenty million, two hundred forty-four thousand, four hundred forty-one".