845134 has 4 divisors (see below), whose sum is σ = 1267704. Its totient is φ = 422566.

The previous prime is 845129. The next prime is 845137. The reversal of 845134 is 431548.

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

It is a junction number, because it is equal to n+sod(n) for n = 845099 and 845108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845137) by changing a digit.

845134 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 211282 + ... + 211285.

It is an arithmetic number, because the mean of its divisors is an integer number (316926).

2⁸⁴⁵¹³⁴ is an apocalyptic number.

845134 is a deficient number, since it is larger than the sum of its proper divisors (422570).

845134 is a wasteful number, since it uses less digits than its factorization.

845134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422569.

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

The square root of 845134 is about 919.3116990445. The cubic root of 845134 is about 94.5457166144.

It can be divided in two parts, 845 and 134, that added together give a palindrome (979).

The spelling of 845134 in words is "eight hundred forty-five thousand, one hundred thirty-four".