242245009 has 2 divisors, whose sum is σ = 242245010. Its totient is φ = 242245008.

The previous prime is 242244983. The next prime is 242245027. The reversal of 242245009 is 900542242.

242245009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163123984 + 79121025 = 12772^2 + 8895^2 .

It is a cyclic number.

It is not a de Polignac number, because 242245009 - 2¹¹ = 242242961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242245049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121122504 + 121122505.

It is an arithmetic number, because the mean of its divisors is an integer number (121122505).

Almost surely, 2^242245009 is an apocalyptic number.

It is an amenable number.

242245009 is a deficient number, since it is larger than the sum of its proper divisors (1).

242245009 is an equidigital number, since it uses as much as digits as its factorization.

242245009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 242245009 is about 15564.2220814276. Note that the first 3 decimals coincide. The cubic root of 242245009 is about 623.3782029590.

The spelling of 242245009 in words is "two hundred forty-two million, two hundred forty-five thousand, nine".