2405243 has 2 divisors, whose sum is σ = 2405244. Its totient is φ = 2405242.

The previous prime is 2405239. The next prime is 2405251. The reversal of 2405243 is 3425042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2405243 - 2² = 2405239 is a prime.

It is not a weakly prime, because it can be changed into another prime (2405203) 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, 1202621 + 1202622.

It is an arithmetic number, because the mean of its divisors is an integer number (1202622).

2^2405243 is an apocalyptic number.

2405243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2405243 is an equidigital number, since it uses as much as digits as its factorization.

2405243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 2405243 is about 1550.8845862926. The cubic root of 2405243 is about 133.9840145778.

The spelling of 2405243 in words is "two million, four hundred five thousand, two hundred forty-three".