243121244130 has 24 divisors (see below), whose sum is σ = 632115234972. Its totient is φ = 64832331744.

The previous prime is 243121244123. The next prime is 243121244141. The reversal of 243121244130 is 31442121342.

243121244130 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 212 + 441 + 3 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 242120091249 + 1001152881 = 492057^2 + 31641^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243121244094 and 243121244103.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1350673489 + ... + 1350673668.

Almost surely, 2^243121244130 is an apocalyptic number.

243121244130 is an abundant number, since it is smaller than the sum of its proper divisors (388993990842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243121244130 is a wasteful number, since it uses less digits than its factorization.

243121244130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701347170 (or 2701347167 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 243121244130 its reverse (31442121342), we get a palindrome (274563365472).

The spelling of 243121244130 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-four thousand, one hundred thirty".