243121245241 has 32 divisors (see below), whose sum is σ = 284324329728. Its totient is φ = 203598904320.

The previous prime is 243121245239. The next prime is 243121245259. The reversal of 243121245241 is 142542121342.

It is not a de Polignac number, because 243121245241 - 2¹ = 243121245239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243121245281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24836350 + ... + 24846136.

It is an arithmetic number, because the mean of its divisors is an integer number (8885135304).

Almost surely, 2^243121245241 is an apocalyptic number.

It is an amenable number.

243121245241 is a deficient number, since it is larger than the sum of its proper divisors (41203084487).

243121245241 is a wasteful number, since it uses less digits than its factorization.

243121245241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10321.

The product of its digits is 15360, while the sum is 31.

Adding to 243121245241 its reverse (142542121342), we get a palindrome (385663366583).

The spelling of 243121245241 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-five thousand, two hundred forty-one".