241944821 has 2 divisors, whose sum is σ = 241944822. Its totient is φ = 241944820.

The previous prime is 241944763. The next prime is 241944823. The reversal of 241944821 is 128449142.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231952900 + 9991921 = 15230^2 + 3161^2 .

It is a cyclic number.

It is not a de Polignac number, because 241944821 - 2¹⁰ = 241943797 is a prime.

It is a Sophie Germain prime.

Together with 241944823, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241944823) 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, 120972410 + 120972411.

It is an arithmetic number, because the mean of its divisors is an integer number (120972411).

Almost surely, 2^241944821 is an apocalyptic number.

It is an amenable number.

241944821 is a deficient number, since it is larger than the sum of its proper divisors (1).

241944821 is an equidigital number, since it uses as much as digits as its factorization.

241944821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 35.

The square root of 241944821 is about 15554.5755647655. The cubic root of 241944821 is about 623.1206014960.

The spelling of 241944821 in words is "two hundred forty-one million, nine hundred forty-four thousand, eight hundred twenty-one".