243120244105 has 16 divisors (see below), whose sum is σ = 294741714960. Its totient is φ = 192502775808.

The previous prime is 243120244067. The next prime is 243120244109. The reversal of 243120244105 is 501442021342.

It can be written as a sum of positive squares in 8 ways, for example, as 94504597056 + 148615647049 = 307416^2 + 385507^2 .

It is a cyclic number.

It is not a de Polignac number, because 243120244105 - 2¹³ = 243120235913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243120244109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97129 + ... + 704041.

It is an arithmetic number, because the mean of its divisors is an integer number (18421357185).

Almost surely, 2^243120244105 is an apocalyptic number.

It is an amenable number.

243120244105 is a deficient number, since it is larger than the sum of its proper divisors (51621470855).

243120244105 is a wasteful number, since it uses less digits than its factorization.

243120244105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607740.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 243120244105 its reverse (501442021342), we get a palindrome (744562265447).

The spelling of 243120244105 in words is "two hundred forty-three billion, one hundred twenty million, two hundred forty-four thousand, one hundred five".