41720081 has 8 divisors (see below), whose sum is σ = 45217704. Its totient is φ = 38263680.

The previous prime is 41720071. The next prime is 41720087. The reversal of 41720081 is 18002714.

It can be written as a sum of positive squares in 4 ways, for example, as 3168400 + 38551681 = 1780^2 + 6209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 41720081 - 2¹⁰ = 41719057 is a prime.

It is a super-2 number, since 2×41720081² = 3481130317293122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41720087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8180 + ... + 12261.

It is an arithmetic number, because the mean of its divisors is an integer number (5652213).

Almost surely, 2^41720081 is an apocalyptic number.

It is an amenable number.

41720081 is a deficient number, since it is larger than the sum of its proper divisors (3497623).

41720081 is a wasteful number, since it uses less digits than its factorization.

41720081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20611.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 41720081 is about 6459.1083750004. The cubic root of 41720081 is about 346.8287156381.

Adding to 41720081 its reverse (18002714), we get a palindrome (59722795).

The spelling of 41720081 in words is "forty-one million, seven hundred twenty thousand, eighty-one".