243121245132 has 24 divisors (see below), whose sum is σ = 568028370672. Its totient is φ = 80933920000.

The previous prime is 243121245109. The next prime is 243121245181. The reversal of 243121245132 is 231542121342.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 243121245132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13302369 + ... + 13320632.

It is an arithmetic number, because the mean of its divisors is an integer number (23667848778).

Almost surely, 2^243121245132 is an apocalyptic number.

It is an amenable number.

243121245132 is an abundant number, since it is smaller than the sum of its proper divisors (324907125540).

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

243121245132 is a wasteful number, since it uses less digits than its factorization.

243121245132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26623769 (or 26623767 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

Adding to 243121245132 its reverse (231542121342), we get a palindrome (474663366474).

The spelling of 243121245132 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-five thousand, one hundred thirty-two".