41642221 has 2 divisors, whose sum is σ = 41642222. Its totient is φ = 41642220.

The previous prime is 41642177. The next prime is 41642261. The reversal of 41642221 is 12224614.

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., 35462025 + 6180196 = 5955^2 + 2486^2 .

It is a cyclic number.

It is not a de Polignac number, because 41642221 - 2²¹ = 39545069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 41642192 and 41642201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41642261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20821110 + 20821111.

It is an arithmetic number, because the mean of its divisors is an integer number (20821111).

Almost surely, 2^41642221 is an apocalyptic number.

It is an amenable number.

41642221 is a deficient number, since it is larger than the sum of its proper divisors (1).

41642221 is an equidigital number, since it uses as much as digits as its factorization.

41642221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 22.

The square root of 41642221 is about 6453.0784126648. The cubic root of 41642221 is about 346.6128251975.

Adding to 41642221 its reverse (12224614), we get a palindrome (53866835).

The spelling of 41642221 in words is "forty-one million, six hundred forty-two thousand, two hundred twenty-one".