1243043997112 has 16 divisors (see below), whose sum is σ = 2352090133800. Its totient is φ = 615819961440.

The previous prime is 1243043997089. The next prime is 1243043997113. The reversal of 1243043997112 is 2117993403421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243043997113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712753714 + ... + 712755457.

Almost surely, 2^{1243043997112} is an apocalyptic number.

It is an amenable number.

1243043997112 is a deficient number, since it is larger than the sum of its proper divisors (1109046136688).

1243043997112 is a wasteful number, since it uses less digits than its factorization.

1243043997112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425509286 (or 1425509282 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 1243043997112 in words is "one trillion, two hundred forty-three billion, forty-three million, nine hundred ninety-seven thousand, one hundred twelve".