1242443013143 has 4 divisors (see below), whose sum is σ = 1296462274608. Its totient is φ = 1188423751680.

The previous prime is 1242443013137. The next prime is 1242443013179. The reversal of 1242443013143 is 3413103442421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1242443013143 - 2⁶ = 1242443013079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242443013113) 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, 27009630698 + ... + 27009630743.

It is an arithmetic number, because the mean of its divisors is an integer number (324115568652).

Almost surely, 2^{1242443013143} is an apocalyptic number.

1242443013143 is a deficient number, since it is larger than the sum of its proper divisors (54019261465).

1242443013143 is an equidigital number, since it uses as much as digits as its factorization.

1242443013143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54019261464.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 1242443013143 its reverse (3413103442421), we get a palindrome (4655546455564).

The spelling of 1242443013143 in words is "one trillion, two hundred forty-two billion, four hundred forty-three million, thirteen thousand, one hundred forty-three".