1242443401243 has 6 divisors (see below), whose sum is σ = 1365660928772. Its totient is φ = 1129494001020.

The previous prime is 1242443401139. The next prime is 1242443401249. The reversal of 1242443401243 is 3421043442421.

It is not a de Polignac number, because 1242443401243 - 2¹⁷ = 1242443270171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242443401199 and 1242443401208.

It is not an unprimeable number, because it can be changed into a prime (1242443401249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5134063521 + ... + 5134063762.

Almost surely, 2^{1242443401243} is an apocalyptic number.

1242443401243 is a deficient number, since it is larger than the sum of its proper divisors (123217527529).

1242443401243 is a wasteful number, since it uses less digits than its factorization.

1242443401243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10268127305 (or 10268127294 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 1242443401243 its reverse (3421043442421), we get a palindrome (4663486843664).

The spelling of 1242443401243 in words is "one trillion, two hundred forty-two billion, four hundred forty-three million, four hundred one thousand, two hundred forty-three".