241221605 has 8 divisors (see below), whose sum is σ = 289738752. Its totient is φ = 192795408.

The previous prime is 241221593. The next prime is 241221667. The reversal of 241221605 is 506122142.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-241221605 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 16757 + ... + 27626.

It is an arithmetic number, because the mean of its divisors is an integer number (36217344).

Almost surely, 2^241221605 is an apocalyptic number.

It is an amenable number.

241221605 is a deficient number, since it is larger than the sum of its proper divisors (48517147).

241221605 is a wasteful number, since it uses less digits than its factorization.

241221605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45475.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 241221605 is about 15531.3104727193. The cubic root of 241221605 is about 622.4991091529.

Adding to 241221605 its reverse (506122142), we get a palindrome (747343747).

The spelling of 241221605 in words is "two hundred forty-one million, two hundred twenty-one thousand, six hundred five".