2140109 has 2 divisors, whose sum is σ = 2140110. Its totient is φ = 2140108.

The previous prime is 2140091. The next prime is 2140121. The reversal of 2140109 is 9010412.

It is a happy number.

2140109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (2140091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2111209 + 28900 = 1453^2 + 170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070054 + 1070055.

It is an arithmetic number, because the mean of its divisors is an integer number (1070055).

2^2140109 is an apocalyptic number.

It is an amenable number.

2140109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140109 is an equidigital number, since it uses as much as digits as its factorization.

2140109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2140109 is about 1462.9111387914. The cubic root of 2140109 is about 128.8680621268.

The spelling of 2140109 in words is "two million, one hundred forty thousand, one hundred nine".