850420 has 24 divisors (see below), whose sum is σ = 1807848. Its totient is φ = 336000.

The previous prime is 850417. The next prime is 850427. The reversal of 850420 is 24058.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54756 + 795664 = 234^2 + 892^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1810 + ... + 2230.

It is an arithmetic number, because the mean of its divisors is an integer number (75327).

2⁸⁵⁰⁴²⁰ is an apocalyptic number.

It is an amenable number.

850420 is an abundant number, since it is smaller than the sum of its proper divisors (957428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

850420 is a wasteful number, since it uses less digits than its factorization.

850420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 850420 is about 922.1821945798. The cubic root of 850420 is about 94.7424232146.

Adding to 850420 its reverse (24058), we get a palindrome (874478).

The spelling of 850420 in words is "eight hundred fifty thousand, four hundred twenty".