242743873 has 2 divisors, whose sum is σ = 242743874. Its totient is φ = 242743872.

The previous prime is 242743843. The next prime is 242743913. The reversal of 242743873 is 378347242.

It is an a-pointer prime, because the next prime (242743913) can be obtained adding 242743873 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184633744 + 58110129 = 13588^2 + 7623^2 .

It is a cyclic number.

It is not a de Polignac number, because 242743873 - 2⁵ = 242743841 is a prime.

It is not a weakly prime, because it can be changed into another prime (242743843) 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, 121371936 + 121371937.

It is an arithmetic number, because the mean of its divisors is an integer number (121371937).

Almost surely, 2^242743873 is an apocalyptic number.

It is an amenable number.

242743873 is a deficient number, since it is larger than the sum of its proper divisors (1).

242743873 is an equidigital number, since it uses as much as digits as its factorization.

242743873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 40.

The square root of 242743873 is about 15580.2398248551. The cubic root of 242743873 is about 623.8058247259.

The spelling of 242743873 in words is "two hundred forty-two million, seven hundred forty-three thousand, eight hundred seventy-three".