840101 has 8 divisors (see below), whose sum is σ = 885600. Its totient is φ = 795760.

The previous prime is 840083. The next prime is 840109. The reversal of 840101 is 101048.

It is a happy number.

840101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 840101 - 2¹⁴ = 823717 is a prime.

It is a Duffinian number.

840101 is a modest number, since divided by 101 gives 84 as remainder.

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 840101.

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, 1466 + ... + 1956.

It is an arithmetic number, because the mean of its divisors is an integer number (110700).

2⁸⁴⁰¹⁰¹ is an apocalyptic number.

It is an amenable number.

840101 is a deficient number, since it is larger than the sum of its proper divisors (45499).

840101 is a wasteful number, since it uses less digits than its factorization.

840101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 840101 is about 916.5702373523. The cubic root of 840101 is about 94.3576610984.

Adding to 840101 its reverse (101048), we get a palindrome (941149).

The spelling of 840101 in words is "eight hundred forty thousand, one hundred one".