2108139 has 16 divisors (see below), whose sum is σ = 3091584. Its totient is φ = 1267200.

The previous prime is 2108137. The next prime is 2108159. The reversal of 2108139 is 9318012.

It is not a de Polignac number, because 2108139 - 2¹ = 2108137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2108137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6204 + ... + 6534.

It is an arithmetic number, because the mean of its divisors is an integer number (193224).

2^2108139 is an apocalyptic number.

2108139 is a deficient number, since it is larger than the sum of its proper divisors (983445).

2108139 is a wasteful number, since it uses less digits than its factorization.

2108139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2108139 is about 1451.9431807065. The cubic root of 2108139 is about 128.2231418589.

The spelling of 2108139 in words is "two million, one hundred eight thousand, one hundred thirty-nine".