842980 has 24 divisors (see below), whose sum is σ = 1790712. Its totient is φ = 333312.

The previous prime is 842977. The next prime is 842981. The reversal of 842980 is 89248.

It can be written as a sum of positive squares in 4 ways, for example, as 256 + 842724 = 16^2 + 918^2 .

It is not an unprimeable number, because it can be changed into a prime (842981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2074 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (74613).

2⁸⁴²⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

842980 is an abundant number, since it is smaller than the sum of its proper divisors (947732).

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

842980 is a wasteful number, since it uses less digits than its factorization.

842980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 842980 is about 918.1394229636. The cubic root of 842980 is about 94.4653251281.

The spelling of 842980 in words is "eight hundred forty-two thousand, nine hundred eighty".