1243204412 has 6 divisors (see below), whose sum is σ = 2175607728. Its totient is φ = 621602204.

The previous prime is 1243204367. The next prime is 1243204453. The reversal of 1243204412 is 2144023421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155400548 + ... + 155400555.

It is an arithmetic number, because the mean of its divisors is an integer number (362601288).

Almost surely, 2^1243204412 is an apocalyptic number.

It is an amenable number.

1243204412 is a deficient number, since it is larger than the sum of its proper divisors (932403316).

1243204412 is a wasteful number, since it uses less digits than its factorization.

1243204412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310801107 (or 310801105 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1243204412 is about 35259.1039591196. The cubic root of 1243204412 is about 1075.2617100688.

Adding to 1243204412 its reverse (2144023421), we get a palindrome (3387227833).

The spelling of 1243204412 in words is "one billion, two hundred forty-three million, two hundred four thousand, four hundred twelve".