2942243209 has 2 divisors, whose sum is σ = 2942243210. Its totient is φ = 2942243208.

The previous prime is 2942243197. The next prime is 2942243279. The reversal of 2942243209 is 9023422492.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2937314809 + 4928400 = 54197^2 + 2220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2942243209 - 2¹⁵ = 2942210441 is a prime.

It is not a weakly prime, because it can be changed into another prime (2942243279) 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, 1471121604 + 1471121605.

It is an arithmetic number, because the mean of its divisors is an integer number (1471121605).

Almost surely, 2^2942243209 is an apocalyptic number.

It is an amenable number.

2942243209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2942243209 is an equidigital number, since it uses as much as digits as its factorization.

2942243209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 2942243209 is about 54242.4484052850. The cubic root of 2942243209 is about 1432.9340071585.

The spelling of 2942243209 in words is "two billion, nine hundred forty-two million, two hundred forty-three thousand, two hundred nine".