850123 has 4 divisors (see below), whose sum is σ = 853920. Its totient is φ = 846328.

The previous prime is 850121. The next prime is 850133. The reversal of 850123 is 321058.

It is a happy number.

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 850123 - 2¹ = 850121 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

850123 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 850123.

It is not an unprimeable number, because it can be changed into a prime (850121) 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, 1540 + ... + 2017.

It is an arithmetic number, because the mean of its divisors is an integer number (213480).

2⁸⁵⁰¹²³ is an apocalyptic number.

850123 is a deficient number, since it is larger than the sum of its proper divisors (3797).

850123 is a wasteful number, since it uses less digits than its factorization.

850123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 850123 is about 922.0211494321. The cubic root of 850123 is about 94.7313926744.

The spelling of 850123 in words is "eight hundred fifty thousand, one hundred twenty-three".