242724737 has 2 divisors, whose sum is σ = 242724738. Its totient is φ = 242724736.

The previous prime is 242724733. The next prime is 242724743. The reversal of 242724737 is 737427242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241833601 + 891136 = 15551^2 + 944^2 .

It is a cyclic number.

It is not a de Polignac number, because 242724737 - 2² = 242724733 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242724737.

It is not a weakly prime, because it can be changed into another prime (242724733) 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, 121362368 + 121362369.

It is an arithmetic number, because the mean of its divisors is an integer number (121362369).

Almost surely, 2^242724737 is an apocalyptic number.

It is an amenable number.

242724737 is a deficient number, since it is larger than the sum of its proper divisors (1).

242724737 is an equidigital number, since it uses as much as digits as its factorization.

242724737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 38.

The square root of 242724737 is about 15579.6257015372. The cubic root of 242724737 is about 623.7894323287.

The spelling of 242724737 in words is "two hundred forty-two million, seven hundred twenty-four thousand, seven hundred thirty-seven".