1243002112143 has 16 divisors (see below), whose sum is σ = 1903161129600. Its totient is φ = 713685422880.

The previous prime is 1243002112087. The next prime is 1243002112153. The reversal of 1243002112143 is 3412112003421.

It is not a de Polignac number, because 1243002112143 - 2¹⁰ = 1243002111119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243002112153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 991229128 + ... + 991230381.

It is an arithmetic number, because the mean of its divisors is an integer number (118947570600).

Almost surely, 2^{1243002112143} is an apocalyptic number.

1243002112143 is a deficient number, since it is larger than the sum of its proper divisors (660159017457).

1243002112143 is a wasteful number, since it uses less digits than its factorization.

1243002112143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982459542.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1243002112143 its reverse (3412112003421), we get a palindrome (4655114115564).

The spelling of 1243002112143 in words is "one trillion, two hundred forty-three billion, two million, one hundred twelve thousand, one hundred forty-three".