812841 has 8 divisors (see below), whose sum is σ = 1121280. Its totient is φ = 523152.

The previous prime is 812807. The next prime is 812849. The reversal of 812841 is 148218.

812841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-812841 is a prime.

812841 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (812849) 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, 4585 + ... + 4758.

It is an arithmetic number, because the mean of its divisors is an integer number (140160).

2⁸¹²⁸⁴¹ is an apocalyptic number.

It is an amenable number.

812841 is a deficient number, since it is larger than the sum of its proper divisors (308439).

812841 is a wasteful number, since it uses less digits than its factorization.

812841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9375.

The product of its digits is 512, while the sum is 24.

The square root of 812841 is about 901.5769517906. The cubic root of 812841 is about 93.3258313131.

It can be divided in two parts, 812 and 841, that added together give a triangular number (1653 = T₅₇).

The spelling of 812841 in words is "eight hundred twelve thousand, eight hundred forty-one".