241366721 has 4 divisors (see below), whose sum is σ = 241609812. Its totient is φ = 241123632.

The previous prime is 241366711. The next prime is 241366733. The reversal of 241366721 is 127663142.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 133726096 + 107640625 = 11564^2 + 10375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-241366721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (241366711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120050 + ... + 122043.

It is an arithmetic number, because the mean of its divisors is an integer number (60402453).

Almost surely, 2^241366721 is an apocalyptic number.

It is an amenable number.

241366721 is a deficient number, since it is larger than the sum of its proper divisors (243091).

241366721 is an equidigital number, since it uses as much as digits as its factorization.

241366721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243090.

The product of its digits is 12096, while the sum is 32.

The square root of 241366721 is about 15535.9814945822. The cubic root of 241366721 is about 622.6239134410.

The spelling of 241366721 in words is "two hundred forty-one million, three hundred sixty-six thousand, seven hundred twenty-one".