1243213204 has 24 divisors (see below), whose sum is σ = 2298965760. Its totient is φ = 587050464.

The previous prime is 1243213199. The next prime is 1243213211. The reversal of 1243213204 is 4023123421.

It is a congruent number.

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, 78259 + ... + 92794.

It is an arithmetic number, because the mean of its divisors is an integer number (95790240).

Almost surely, 2^1243213204 is an apocalyptic number.

It is an amenable number.

1243213204 is a deficient number, since it is larger than the sum of its proper divisors (1055752556).

1243213204 is a wasteful number, since it uses less digits than its factorization.

1243213204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171159 (or 171157 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1243213204 is about 35259.2286359189. The cubic root of 1243213204 is about 1075.2642448300.

Adding to 1243213204 its reverse (4023123421), we get a palindrome (5266336625).

The spelling of 1243213204 in words is "one billion, two hundred forty-three million, two hundred thirteen thousand, two hundred four".