243121243024 has 40 divisors (see below), whose sum is σ = 540915691680. Its totient is φ = 104693356800.

The previous prime is 243121243019. The next prime is 243121243039. The reversal of 243121243024 is 420342121342.

It is a junction number, because it is equal to n+sod(n) for n = 243121242983 and 243121243001.

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, 36348517 + ... + 36355204.

It is an arithmetic number, because the mean of its divisors is an integer number (13522892292).

Almost surely, 2^243121243024 is an apocalyptic number.

It is an amenable number.

243121243024 is an abundant number, since it is smaller than the sum of its proper divisors (297794448656).

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

243121243024 is a wasteful number, since it uses less digits than its factorization.

243121243024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72703759 (or 72703753 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 243121243024 its reverse (420342121342), we get a palindrome (663463364366).

The spelling of 243121243024 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-three thousand, twenty-four".