2040109 has 2 divisors, whose sum is σ = 2040110. Its totient is φ = 2040108.

The previous prime is 2040107. The next prime is 2040113. The reversal of 2040109 is 9010402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1447209 + 592900 = 1203^2 + 770^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040109 - 2¹ = 2040107 is a prime.

Together with 2040107, it forms a pair of twin primes.

It is equal to p₁₅₁₇₂₀ and since 2040109 and 151720 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 2040092 and 2040101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040107) 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, 1020054 + 1020055.

It is an arithmetic number, because the mean of its divisors is an integer number (1020055).

2^2040109 is an apocalyptic number.

It is an amenable number.

2040109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040109 is an equidigital number, since it uses as much as digits as its factorization.

2040109 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 16.

The square root of 2040109 is about 1428.3238428312. The cubic root of 2040109 is about 126.8287729057.

The spelling of 2040109 in words is "two million, forty thousand, one hundred nine".