812241 has 16 divisors (see below), whose sum is σ = 1224000. Its totient is φ = 532224.

The previous prime is 812233. The next prime is 812249. The reversal of 812241 is 142218.

It is an interprime number because it is at equal distance from previous prime (812233) and next prime (812249).

It is not a de Polignac number, because 812241 - 2³ = 812233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (812249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1585 + ... + 2033.

It is an arithmetic number, because the mean of its divisors is an integer number (76500).

2⁸¹²²⁴¹ is an apocalyptic number.

It is an amenable number.

812241 is a deficient number, since it is larger than the sum of its proper divisors (411759).

812241 is a wasteful number, since it uses less digits than its factorization.

812241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 519 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 812241 is about 901.2441400642. The cubic root of 812241 is about 93.3028627858.

Adding to 812241 its reverse (142218), we get a palindrome (954459).

It can be divided in two parts, 81224 and 1, that added together give a square (81225 = 285²).

The spelling of 812241 in words is "eight hundred twelve thousand, two hundred forty-one".