41668421 has 4 divisors (see below), whose sum is σ = 41713644. Its totient is φ = 41623200.

The previous prime is 41668399. The next prime is 41668427. The reversal of 41668421 is 12486614.

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 17056900 + 24611521 = 4130^2 + 4961^2 .

It is a cyclic number.

It is not a de Polignac number, because 41668421 - 2²² = 37474117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41668427) 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, 21200 + ... + 23081.

It is an arithmetic number, because the mean of its divisors is an integer number (10428411).

Almost surely, 2^41668421 is an apocalyptic number.

It is an amenable number.

41668421 is a deficient number, since it is larger than the sum of its proper divisors (45223).

41668421 is an equidigital number, since it uses as much as digits as its factorization.

41668421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45222.

The product of its digits is 9216, while the sum is 32.

The square root of 41668421 is about 6455.1081323244. The cubic root of 41668421 is about 346.6855026542.

The spelling of 41668421 in words is "forty-one million, six hundred sixty-eight thousand, four hundred twenty-one".