2109106 has 8 divisors (see below), whose sum is σ = 3170160. Its totient is φ = 1052388.

The previous prime is 2109103. The next prime is 2109109. The reversal of 2109106 is 6019012.

It is an interprime number because it is at equal distance from previous prime (2109103) and next prime (2109109).

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

It is not an unprimeable number, because it can be changed into a prime (2109101) 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, 765 + ... + 2191.

It is an arithmetic number, because the mean of its divisors is an integer number (396270).

2^2109106 is an apocalyptic number.

2109106 is the 919-th centered pentagonal number.

2109106 is a deficient number, since it is larger than the sum of its proper divisors (1061054).

2109106 is a wasteful number, since it uses less digits than its factorization.

2109106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 2109106 is about 1452.2761445400. The cubic root of 2109106 is about 128.2427441123.

It can be divided in two parts, 210 and 9106, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 2109106 in words is "two million, one hundred nine thousand, one hundred six".