840113 has 4 divisors (see below), whose sum is σ = 852720. Its totient is φ = 827508.

The previous prime is 840109. The next prime is 840137. The reversal of 840113 is 311048.

It is a happy number.

840113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 840113 - 2² = 840109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 840091 and 840100.

It is not an unprimeable number, because it can be changed into a prime (840163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6203 + ... + 6336.

It is an arithmetic number, because the mean of its divisors is an integer number (213180).

2⁸⁴⁰¹¹³ is an apocalyptic number.

It is an amenable number.

840113 is a deficient number, since it is larger than the sum of its proper divisors (12607).

840113 is a wasteful number, since it uses less digits than its factorization.

840113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12606.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 840113 is about 916.5767834721. The cubic root of 840113 is about 94.3581103644.

The spelling of 840113 in words is "eight hundred forty thousand, one hundred thirteen".