542942287243 has 2 divisors, whose sum is σ = 542942287244. Its totient is φ = 542942287242.

The previous prime is 542942287187. The next prime is 542942287259. The reversal of 542942287243 is 342782249245.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542942287243 is a prime.

It is not a weakly prime, because it can be changed into another prime (542942087243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271471143621 + 271471143622.

It is an arithmetic number, because the mean of its divisors is an integer number (271471143622).

Almost surely, 2^542942287243 is an apocalyptic number.

542942287243 is a deficient number, since it is larger than the sum of its proper divisors (1).

542942287243 is an equidigital number, since it uses as much as digits as its factorization.

542942287243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7741440, while the sum is 52.

The spelling of 542942287243 in words is "five hundred forty-two billion, nine hundred forty-two million, two hundred eighty-seven thousand, two hundred forty-three".