842380 has 48 divisors (see below), whose sum is σ = 2209536. Its totient is φ = 262080.

The previous prime is 842371. The next prime is 842383. The reversal of 842380 is 83248.

842380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (842383) by changing a digit.

842380 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 15 ways as a sum of consecutive naturals, for example, 1267 + ... + 1813.

It is an arithmetic number, because the mean of its divisors is an integer number (46032).

2⁸⁴²³⁸⁰ 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 842380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104768).

842380 is an abundant number, since it is smaller than the sum of its proper divisors (1367156).

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

842380 is a wasteful number, since it uses less digits than its factorization.

842380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 842380 is about 917.8126170412. The cubic root of 842380 is about 94.4429075746.

The spelling of 842380 in words is "eight hundred forty-two thousand, three hundred eighty".