2108123 has 2 divisors, whose sum is σ = 2108124. Its totient is φ = 2108122.

The previous prime is 2108089. The next prime is 2108137. The reversal of 2108123 is 3218012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2108123 - 2⁶ = 2108059 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 0 + 8⁷ + 1 + 2¹³ + 3⁶ .

It is not a weakly prime, because it can be changed into another prime (2108723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054061 + 1054062.

It is an arithmetic number, because the mean of its divisors is an integer number (1054062).

2^2108123 is an apocalyptic number.

2108123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108123 is an equidigital number, since it uses as much as digits as its factorization.

2108123 is an evil number, because the sum of its binary digits is even.

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

The square root of 2108123 is about 1451.9376708385. The cubic root of 2108123 is about 128.2228174693. Note that the first 3 decimals are identical.

The spelling of 2108123 in words is "two million, one hundred eight thousand, one hundred twenty-three".