6840241 has 2 divisors, whose sum is σ = 6840242. Its totient is φ = 6840240.

The previous prime is 6840221. The next prime is 6840257. The reversal of 6840241 is 1420486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5832225 + 1008016 = 2415^2 + 1004^2 .

It is a cyclic number.

It is not a de Polignac number, because 6840241 - 2¹¹ = 6838193 is a prime.

It is not a weakly prime, because it can be changed into another prime (6840221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3420120 + 3420121.

It is an arithmetic number, because the mean of its divisors is an integer number (3420121).

Almost surely, 2^6840241 is an apocalyptic number.

It is an amenable number.

6840241 is a deficient number, since it is larger than the sum of its proper divisors (1).

6840241 is an equidigital number, since it uses as much as digits as its factorization.

6840241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 6840241 is about 2615.3854400451. The cubic root of 6840241 is about 189.8266285535.

The spelling of 6840241 in words is "six million, eight hundred forty thousand, two hundred forty-one".