41995021 has 4 divisors (see below), whose sum is σ = 42301692. Its totient is φ = 41688352.

The previous prime is 41995013. The next prime is 41995069. The reversal of 41995021 is 12059914.

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 30360100 + 11634921 = 5510^2 + 3411^2 .

It is a cyclic number.

It is not a de Polignac number, because 41995021 - 2³ = 41995013 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41995001) 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, 153130 + ... + 153403.

It is an arithmetic number, because the mean of its divisors is an integer number (10575423).

Almost surely, 2^41995021 is an apocalyptic number.

It is an amenable number.

41995021 is a deficient number, since it is larger than the sum of its proper divisors (306671).

41995021 is a wasteful number, since it uses less digits than its factorization.

41995021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306670.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 41995021 is about 6480.3565488328. The cubic root of 41995021 is about 347.5889281231.

The spelling of 41995021 in words is "forty-one million, nine hundred ninety-five thousand, twenty-one".