243124004441 has 2 divisors, whose sum is σ = 243124004442. Its totient is φ = 243124004440.

The previous prime is 243124004419. The next prime is 243124004449. The reversal of 243124004441 is 144400421342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189255451225 + 53868553216 = 435035^2 + 232096^2 .

It is a cyclic number.

It is not a de Polignac number, because 243124004441 - 2¹⁴ = 243123988057 is a prime.

It is not a weakly prime, because it can be changed into another prime (243124004449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121562002220 + 121562002221.

It is an arithmetic number, because the mean of its divisors is an integer number (121562002221).

Almost surely, 2^243124004441 is an apocalyptic number.

It is an amenable number.

243124004441 is a deficient number, since it is larger than the sum of its proper divisors (1).

243124004441 is an equidigital number, since it uses as much as digits as its factorization.

243124004441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 243124004441 its reverse (144400421342), we get a palindrome (387524425783).

The spelling of 243124004441 in words is "two hundred forty-three billion, one hundred twenty-four million, four thousand, four hundred forty-one".