810041 has 4 divisors (see below), whose sum is σ = 831972. Its totient is φ = 788112.

The previous prime is 810023. The next prime is 810049. The reversal of 810041 is 140018.

It is a happy number.

810041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140018 = 2 ⋅70009.

It can be written as a sum of positive squares in 2 ways, for example, as 672400 + 137641 = 820^2 + 371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-810041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 809998 and 810025.

It is not an unprimeable number, because it can be changed into a prime (810049) 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, 10910 + ... + 10983.

It is an arithmetic number, because the mean of its divisors is an integer number (207993).

2⁸¹⁰⁰⁴¹ is an apocalyptic number.

It is an amenable number.

810041 is a deficient number, since it is larger than the sum of its proper divisors (21931).

810041 is a wasteful number, since it uses less digits than its factorization.

810041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21930.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 810041 is about 900.0227774895. The cubic root of 810041 is about 93.2185479488.

Adding to 810041 its reverse (140018), we get a palindrome (950059).

The spelling of 810041 in words is "eight hundred ten thousand, forty-one".