240004109 has 2 divisors, whose sum is σ = 240004110. Its totient is φ = 240004108.

The previous prime is 240004099. The next prime is 240004123. The reversal of 240004109 is 901400042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239940100 + 64009 = 15490^2 + 253^2 .

It is a cyclic number.

It is not a de Polignac number, because 240004109 - 2⁸ = 240003853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240004169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120002054 + 120002055.

It is an arithmetic number, because the mean of its divisors is an integer number (120002055).

Almost surely, 2^240004109 is an apocalyptic number.

It is an amenable number.

240004109 is a deficient number, since it is larger than the sum of its proper divisors (1).

240004109 is an equidigital number, since it uses as much as digits as its factorization.

240004109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 240004109 is about 15492.0660016668. The cubic root of 240004109 is about 621.4500477312.

The spelling of 240004109 in words is "two hundred forty million, four thousand, one hundred nine".