842530 has 16 divisors (see below), whose sum is σ = 1633464. Its totient is φ = 311040.

The previous prime is 842521. The next prime is 842531. The reversal of 842530 is 35248.

842530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 727609 + 114921 = 853^2 + 339^2 .

It is not an unprimeable number, because it can be changed into a prime (842531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3111 + ... + 3370.

2⁸⁴²⁵³⁰ is an apocalyptic number.

842530 is a deficient number, since it is larger than the sum of its proper divisors (790934).

842530 is a wasteful number, since it uses less digits than its factorization.

842530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6501.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 842530 is about 917.8943294301. The cubic root of 842530 is about 94.4485129607.

Adding to 842530 its reverse (35248), we get a palindrome (877778).

The spelling of 842530 in words is "eight hundred forty-two thousand, five hundred thirty".