845143 has 4 divisors (see below), whose sum is σ = 910168. Its totient is φ = 780120.

The previous prime is 845137. The next prime is 845167. The reversal of 845143 is 341548.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 845143 - 2⁵ = 845111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845183) 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, 32493 + ... + 32518.

It is an arithmetic number, because the mean of its divisors is an integer number (227542).

2⁸⁴⁵¹⁴³ is an apocalyptic number.

845143 is a deficient number, since it is larger than the sum of its proper divisors (65025).

845143 is a wasteful number, since it uses less digits than its factorization.

845143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65024.

The product of its digits is 1920, while the sum is 25.

The square root of 845143 is about 919.3165939980. The cubic root of 845143 is about 94.5460522252.

The spelling of 845143 in words is "eight hundred forty-five thousand, one hundred forty-three".