840108 has 12 divisors (see below), whose sum is σ = 1960280. Its totient is φ = 280032.

The previous prime is 840083. The next prime is 840109. The reversal of 840108 is 801048.

840108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

840108 is a modest number, since divided by 108 gives 84 as remainder.

It is not an unprimeable number, because it can be changed into a prime (840109) by changing a digit.

840108 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, 34993 + ... + 35016.

2⁸⁴⁰¹⁰⁸ is an apocalyptic number.

It is an amenable number.

840108 is an abundant number, since it is smaller than the sum of its proper divisors (1120172).

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

840108 is a wasteful number, since it uses less digits than its factorization.

840108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70016 (or 70014 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 840108 is about 916.5740559278. The cubic root of 840108 is about 94.3579231707.

Subtracting from 840108 its reverse (801048), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 840108 in words is "eight hundred forty thousand, one hundred eight".