242873977987 has 2 divisors, whose sum is σ = 242873977988. Its totient is φ = 242873977986.

The previous prime is 242873977961. The next prime is 242873978027. The reversal of 242873977987 is 789779378242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242873977987 - 2⁷ = 242873977859 is a prime.

It is not a weakly prime, because it can be changed into another prime (242873977937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121436988993 + 121436988994.

It is an arithmetic number, because the mean of its divisors is an integer number (121436988994).

Almost surely, 2^242873977987 is an apocalyptic number.

242873977987 is a deficient number, since it is larger than the sum of its proper divisors (1).

242873977987 is an equidigital number, since it uses as much as digits as its factorization.

242873977987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 597445632, while the sum is 73.

The spelling of 242873977987 in words is "two hundred forty-two billion, eight hundred seventy-three million, nine hundred seventy-seven thousand, nine hundred eighty-seven".