1243034242243 has 16 divisors (see below), whose sum is σ = 1275083565696. Its totient is φ = 1211225720320.

The previous prime is 1243034242237. The next prime is 1243034242249. The reversal of 1243034242243 is 3422424303421.

It is an interprime number because it is at equal distance from previous prime (1243034242237) and next prime (1243034242249).

It is a cyclic number.

It is not a de Polignac number, because 1243034242243 - 2⁹ = 1243034241731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243034242199 and 1243034242208.

It is not an unprimeable number, because it can be changed into a prime (1243034242249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15716505 + ... + 15795397.

It is an arithmetic number, because the mean of its divisors is an integer number (79692722856).

Almost surely, 2^{1243034242243} is an apocalyptic number.

1243034242243 is a deficient number, since it is larger than the sum of its proper divisors (32049323453).

1243034242243 is a wasteful number, since it uses less digits than its factorization.

1243034242243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80414.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 1243034242243 its reverse (3422424303421), we get a palindrome (4665458545664).

The spelling of 1243034242243 in words is "one trillion, two hundred forty-three billion, thirty-four million, two hundred forty-two thousand, two hundred forty-three".