842940 has 96 divisors (see below), whose sum is σ = 3010560. Its totient is φ = 191808.

The previous prime is 842939. The next prime is 842951. The reversal of 842940 is 49248.

842940 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 842940.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3669 + ... + 3891.

It is an arithmetic number, because the mean of its divisors is an integer number (31360).

2⁸⁴²⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1505280).

842940 is an abundant number, since it is smaller than the sum of its proper divisors (2167620).

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

842940 is a wasteful number, since it uses less digits than its factorization.

842940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 842940 is about 918.1176395212. The cubic root of 842940 is about 94.4638309556.

The spelling of 842940 in words is "eight hundred forty-two thousand, nine hundred forty".