842680 has 16 divisors (see below), whose sum is σ = 1896120. Its totient is φ = 337056.

The previous prime is 842657. The next prime is 842701. The reversal of 842680 is 86248.

It is a congruent number.

It is an unprimeable number.

842680 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10494 + ... + 10573.

2⁸⁴²⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

842680 is an abundant number, since it is smaller than the sum of its proper divisors (1053440).

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

842680 is a wasteful number, since it uses less digits than its factorization.

842680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21078 (or 21074 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 842680 is about 917.9760345456. The cubic root of 842680 is about 94.4541176815.

The spelling of 842680 in words is "eight hundred forty-two thousand, six hundred eighty".