2542109 has 2 divisors, whose sum is σ = 2542110. Its totient is φ = 2542108.

The previous prime is 2542103. The next prime is 2542139. The reversal of 2542109 is 9012452.

2542109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2316484 + 225625 = 1522^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542109 - 2⁸ = 2541853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2542103) 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, 1271054 + 1271055.

It is an arithmetic number, because the mean of its divisors is an integer number (1271055).

2^2542109 is an apocalyptic number.

It is an amenable number.

2542109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542109 is an equidigital number, since it uses as much as digits as its factorization.

2542109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2542109 is about 1594.3992599095. The cubic root of 2542109 is about 136.4786515026.

The spelling of 2542109 in words is "two million, five hundred forty-two thousand, one hundred nine".