845042 has 16 divisors (see below), whose sum is σ = 1404864. Its totient is φ = 378000.

The previous prime is 845041. The next prime is 845069. The reversal of 845042 is 240548.

It is a junction number, because it is equal to n+sod(n) for n = 844999 and 845017.

It is not an unprimeable number, because it can be changed into a prime (845041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1292 + ... + 1832.

It is an arithmetic number, because the mean of its divisors is an integer number (87804).

2⁸⁴⁵⁰⁴² is an apocalyptic number.

845042 is a deficient number, since it is larger than the sum of its proper divisors (559822).

845042 is a wasteful number, since it uses less digits than its factorization.

845042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 845042 is about 919.2616602470. The cubic root of 845042 is about 94.5422857890.

The spelling of 845042 in words is "eight hundred forty-five thousand, forty-two".