1243443012 has 36 divisors (see below), whose sum is σ = 3375061200. Its totient is φ = 355269264.

The previous prime is 1243443007. The next prime is 1243443023. The reversal of 1243443012 is 2103443421.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1056762 + ... + 1057937.

It is an arithmetic number, because the mean of its divisors is an integer number (93751700).

Almost surely, 2^1243443012 is an apocalyptic number.

1243443012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1243443012 is an abundant number, since it is smaller than the sum of its proper divisors (2131618188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243443012 is a wasteful number, since it uses less digits than its factorization.

1243443012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114720 (or 2114711 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1243443012 is about 35262.4873200970. The cubic root of 1243443012 is about 1075.3304949579.

Adding to 1243443012 its reverse (2103443421), we get a palindrome (3346886433).

The spelling of 1243443012 in words is "one billion, two hundred forty-three million, four hundred forty-three thousand, twelve".