1243244012 has 6 divisors (see below), whose sum is σ = 2175677028. Its totient is φ = 621622004.

The previous prime is 1243244011. The next prime is 1243244033. The reversal of 1243244012 is 2104423421.

It is a super-2 number, since 2×1243244012² = 3091311346747712288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243244011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155405498 + ... + 155405505.

It is an arithmetic number, because the mean of its divisors is an integer number (362612838).

Almost surely, 2^1243244012 is an apocalyptic number.

It is an amenable number.

1243244012 is a deficient number, since it is larger than the sum of its proper divisors (932433016).

1243244012 is a wasteful number, since it uses less digits than its factorization.

1243244012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310811007 (or 310811005 counting only the distinct ones).

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

The square root of 1243244012 is about 35259.6655117430. The cubic root of 1243244012 is about 1075.2731267785.

Adding to 1243244012 its reverse (2104423421), we get a palindrome (3347667433).

The spelling of 1243244012 in words is "one billion, two hundred forty-three million, two hundred forty-four thousand, twelve".