1243201403143 has 24 divisors (see below), whose sum is σ = 1522371102720. Its totient is φ = 1009461443760.

The previous prime is 1243201403113. The next prime is 1243201403149. The reversal of 1243201403143 is 3413041023421.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1243201403143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243201403149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31011130 + ... + 31051192.

It is an arithmetic number, because the mean of its divisors is an integer number (63432129280).

Almost surely, 2^{1243201403143} is an apocalyptic number.

1243201403143 is a deficient number, since it is larger than the sum of its proper divisors (279169699577).

1243201403143 is a wasteful number, since it uses less digits than its factorization.

1243201403143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73427 (or 73420 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1243201403143 its reverse (3413041023421), we get a palindrome (4656242426564).

The spelling of 1243201403143 in words is "one trillion, two hundred forty-three billion, two hundred one million, four hundred three thousand, one hundred forty-three".