41840221 has 4 divisors (see below), whose sum is σ = 42159744. Its totient is φ = 41520700.

The previous prime is 41840209. The next prime is 41840231. The reversal of 41840221 is 12204814.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12204814 = 2 ⋅6102407.

It is a cyclic number.

It is not a de Polignac number, because 41840221 - 2⁵ = 41840189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 41840192 and 41840201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41840231) 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 in 3 ways as a sum of consecutive naturals, for example, 159565 + ... + 159826.

It is an arithmetic number, because the mean of its divisors is an integer number (10539936).

Almost surely, 2^41840221 is an apocalyptic number.

It is an amenable number.

41840221 is a deficient number, since it is larger than the sum of its proper divisors (319523).

41840221 is a wasteful number, since it uses less digits than its factorization.

41840221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319522.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 41840221 is about 6468.4017345864. The cubic root of 41840221 is about 347.1613138186.

The spelling of 41840221 in words is "forty-one million, eight hundred forty thousand, two hundred twenty-one".