243121244452 has 12 divisors (see below), whose sum is σ = 440133287580. Its totient is φ = 117368876576.

The previous prime is 243121244417. The next prime is 243121244557. The reversal of 243121244452 is 254442121342.

It can be written as a sum of positive squares in 2 ways, for example, as 136444539456 + 106676704996 = 369384^2 + 326614^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047936283 + ... + 1047936514.

It is an arithmetic number, because the mean of its divisors is an integer number (36677773965).

Almost surely, 2^243121244452 is an apocalyptic number.

It is an amenable number.

243121244452 is a deficient number, since it is larger than the sum of its proper divisors (197012043128).

243121244452 is a wasteful number, since it uses less digits than its factorization.

243121244452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095872830 (or 2095872828 counting only the distinct ones).

The product of its digits is 61440, while the sum is 34.

Adding to 243121244452 its reverse (254442121342), we get a palindrome (497563365794).

The spelling of 243121244452 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-four thousand, four hundred fifty-two".