2144242409 has 2 divisors, whose sum is σ = 2144242410. Its totient is φ = 2144242408.

The previous prime is 2144242403. The next prime is 2144242427. The reversal of 2144242409 is 9042424412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2061432409 + 82810000 = 45403^2 + 9100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144242409 - 2²⁸ = 1875806953 is a prime.

It is not a weakly prime, because it can be changed into another prime (2144242403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072121204 + 1072121205.

It is an arithmetic number, because the mean of its divisors is an integer number (1072121205).

Almost surely, 2^2144242409 is an apocalyptic number.

It is an amenable number.

2144242409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144242409 is an equidigital number, since it uses as much as digits as its factorization.

2144242409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 2144242409 is about 46305.9651556903. The cubic root of 2144242409 is about 1289.5097407903.

The spelling of 2144242409 in words is "two billion, one hundred forty-four million, two hundred forty-two thousand, four hundred nine".