840103 has 12 divisors (see below), whose sum is σ = 948024. Its totient is φ = 743600.

The previous prime is 840083. The next prime is 840109. The reversal of 840103 is 301048.

It is not a de Polignac number, because 840103 - 2¹³ = 831911 is a prime.

It is an Ulam number.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6348 + ... + 6478.

It is an arithmetic number, because the mean of its divisors is an integer number (79002).

2⁸⁴⁰¹⁰³ is an apocalyptic number.

840103 is a deficient number, since it is larger than the sum of its proper divisors (107921).

840103 is a wasteful number, since it uses less digits than its factorization.

840103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 840103 is about 916.5713283755. The cubic root of 840103 is about 94.3577359763.

The spelling of 840103 in words is "eight hundred forty thousand, one hundred three".