41965821 has 12 divisors (see below), whose sum is σ = 60969948. Its totient is φ = 27814464.

The previous prime is 41965801. The next prime is 41965829. The reversal of 41965821 is 12856914.

It can be written as a sum of positive squares in 2 ways, for example, as 34047225 + 7918596 = 5835^2 + 2814^2 .

It is not a de Polignac number, because 41965821 - 2⁹ = 41965309 is a prime.

It is a super-2 number, since 2×41965821² = 3522260264408082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41965829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11920 + ... + 15033.

It is an arithmetic number, because the mean of its divisors is an integer number (5080829).

Almost surely, 2^41965821 is an apocalyptic number.

It is an amenable number.

41965821 is a deficient number, since it is larger than the sum of its proper divisors (19004127).

41965821 is a wasteful number, since it uses less digits than its factorization.

41965821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27132 (or 27129 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 41965821 is about 6478.1031946087. The cubic root of 41965821 is about 347.5083475386.

The spelling of 41965821 in words is "forty-one million, nine hundred sixty-five thousand, eight hundred twenty-one".