840282241 has 2 divisors, whose sum is σ = 840282242. Its totient is φ = 840282240.

The previous prime is 840282181. The next prime is 840282251. The reversal of 840282241 is 142282048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 777238641 + 63043600 = 27879^2 + 7940^2 .

It is a cyclic number.

It is not a de Polignac number, because 840282241 - 2¹¹ = 840280193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (840282251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420141120 + 420141121.

It is an arithmetic number, because the mean of its divisors is an integer number (420141121).

Almost surely, 2^840282241 is an apocalyptic number.

It is an amenable number.

840282241 is a deficient number, since it is larger than the sum of its proper divisors (1).

840282241 is an equidigital number, since it uses as much as digits as its factorization.

840282241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 840282241 is about 28987.6222032784. The cubic root of 840282241 is about 943.6444609493.

The spelling of 840282241 in words is "eight hundred forty million, two hundred eighty-two thousand, two hundred forty-one".