2105906 has 8 divisors (see below), whose sum is σ = 3446064. Its totient is φ = 957220.

The previous prime is 2105897. The next prime is 2105911. The reversal of 2105906 is 6095012.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47840 + ... + 47883.

It is an arithmetic number, because the mean of its divisors is an integer number (430758).

2^2105906 is an apocalyptic number.

2105906 is a deficient number, since it is larger than the sum of its proper divisors (1340158).

2105906 is a wasteful number, since it uses less digits than its factorization.

2105906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95736.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 2105906 is about 1451.1740074850. The cubic root of 2105906 is about 128.1778533479.

It can be divided in two parts, 210 and 5906, that added together give a palindrome (6116).

The spelling of 2105906 in words is "two million, one hundred five thousand, nine hundred six".