242543773 has 2 divisors, whose sum is σ = 242543774. Its totient is φ = 242543772.

The previous prime is 242543771. The next prime is 242543789. The reversal of 242543773 is 377345242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181360089 + 61183684 = 13467^2 + 7822^2 .

It is a cyclic number.

It is not a de Polignac number, because 242543773 - 2¹ = 242543771 is a prime.

Together with 242543771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242543771) 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, 121271886 + 121271887.

It is an arithmetic number, because the mean of its divisors is an integer number (121271887).

Almost surely, 2^242543773 is an apocalyptic number.

It is an amenable number.

242543773 is a deficient number, since it is larger than the sum of its proper divisors (1).

242543773 is an equidigital number, since it uses as much as digits as its factorization.

242543773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 37.

The square root of 242543773 is about 15573.8169053062. The cubic root of 242543773 is about 623.6343712262.

The spelling of 242543773 in words is "two hundred forty-two million, five hundred forty-three thousand, seven hundred seventy-three".