842550 has 48 divisors (see below), whose sum is σ = 2156112. Its totient is φ = 217600.

The previous prime is 842531. The next prime is 842551. The reversal of 842550 is 55248.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 842550.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 842550.

It is not an unprimeable number, because it can be changed into a prime (842551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6082 + ... + 6218.

It is an arithmetic number, because the mean of its divisors is an integer number (44919).

2⁸⁴²⁵⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1078056).

842550 is an abundant number, since it is smaller than the sum of its proper divisors (1313562).

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

842550 is a wasteful number, since it uses less digits than its factorization.

842550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 842550 is about 917.9052238657. The cubic root of 842550 is about 94.4492602952.

Adding to 842550 its reverse (55248), we get a palindrome (897798).

The spelling of 842550 in words is "eight hundred forty-two thousand, five hundred fifty".