842506 has 12 divisors (see below), whose sum is σ = 1470258. Its totient is φ = 361032.

The previous prime is 842497. The next prime is 842507. The reversal of 842506 is 605248.

842506 is nontrivially palindromic in base 13.

842506 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 only one way, i.e., 648025 + 194481 = 805^2 + 441^2 .

It is not an unprimeable number, because it can be changed into a prime (842507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4201 + ... + 4396.

2⁸⁴²⁵⁰⁶ is an apocalyptic number.

842506 is a deficient number, since it is larger than the sum of its proper divisors (627752).

842506 is a wasteful number, since it uses less digits than its factorization.

842506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8613 (or 8606 counting only the distinct ones).

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

The square root of 842506 is about 917.8812559367. The cubic root of 842506 is about 94.4476161436.

The spelling of 842506 in words is "eight hundred forty-two thousand, five hundred six".