840102 has 16 divisors (see below), whose sum is σ = 1692480. Its totient is φ = 277992.

The previous prime is 840083. The next prime is 840109. The reversal of 840102 is 201048.

840102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 840102.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549 + ... + 1407.

It is an arithmetic number, because the mean of its divisors is an integer number (105780).

2⁸⁴⁰¹⁰² is an apocalyptic number.

840102 is an abundant number, since it is smaller than the sum of its proper divisors (852378).

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

840102 is a wasteful number, since it uses less digits than its factorization.

840102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 840102 is about 916.5707828640. The cubic root of 840102 is about 94.3576985374.

The spelling of 840102 in words is "eight hundred forty thousand, one hundred two".