243121230052 has 6 divisors (see below), whose sum is σ = 425462152598. Its totient is φ = 121560615024.

The previous prime is 243121230029. The next prime is 243121230061. The reversal of 243121230052 is 250032121342.

It can be written as a sum of positive squares in only one way, i.e., 242826215076 + 295014976 = 492774^2 + 17176^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243121229999 and 243121230026.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30390153753 + ... + 30390153760.

Almost surely, 2^243121230052 is an apocalyptic number.

It is an amenable number.

243121230052 is a deficient number, since it is larger than the sum of its proper divisors (182340922546).

243121230052 is a wasteful number, since it uses less digits than its factorization.

243121230052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60780307517 (or 60780307515 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 243121230052 its reverse (250032121342), we get a palindrome (493153351394).

The spelling of 243121230052 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred thirty thousand, fifty-two".