845241 has 4 divisors (see below), whose sum is σ = 1126992. Its totient is φ = 563492.

The previous prime is 845237. The next prime is 845261. The reversal of 845241 is 142548.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 845241 - 2² = 845237 is a prime.

It is a D-number.

It is a Curzon number.

845241 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (845231) 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, 140871 + ... + 140876.

It is an arithmetic number, because the mean of its divisors is an integer number (281748).

2⁸⁴⁵²⁴¹ is an apocalyptic number.

It is an amenable number.

845241 is a deficient number, since it is larger than the sum of its proper divisors (281751).

845241 is a wasteful number, since it uses less digits than its factorization.

845241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281750.

The product of its digits is 1280, while the sum is 24.

The square root of 845241 is about 919.3698929158. The cubic root of 845241 is about 94.5497065003.

Adding to 845241 its reverse (142548), we get a palindrome (987789).

The spelling of 845241 in words is "eight hundred forty-five thousand, two hundred forty-one".