2104242409 has 2 divisors, whose sum is σ = 2104242410. Its totient is φ = 2104242408.

The previous prime is 2104242403. The next prime is 2104242461. The reversal of 2104242409 is 9042424012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2104240384 + 2025 = 45872^2 + 45^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2104242409 is a prime.

It is a super-2 number, since 2×2104242409² = 8855672231668246562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2104242403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052121204 + 1052121205.

It is an arithmetic number, because the mean of its divisors is an integer number (1052121205).

Almost surely, 2^2104242409 is an apocalyptic number.

It is an amenable number.

2104242409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104242409 is an equidigital number, since it uses as much as digits as its factorization.

2104242409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2104242409 is about 45872.0220722828. The cubic root of 2104242409 is about 1281.4409247140.

The spelling of 2104242409 in words is "two billion, one hundred four million, two hundred forty-two thousand, four hundred nine".