4302509 has 2 divisors, whose sum is σ = 4302510. Its totient is φ = 4302508.

The previous prime is 4302503. The next prime is 4302517. The reversal of 4302509 is 9052034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3258025 + 1044484 = 1805^2 + 1022^2 .

It is a cyclic number.

It is not a de Polignac number, because 4302509 - 2²⁰ = 3253933 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (4302503) 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, 2151254 + 2151255.

It is an arithmetic number, because the mean of its divisors is an integer number (2151255).

Almost surely, 2^4302509 is an apocalyptic number.

It is an amenable number.

4302509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4302509 is an equidigital number, since it uses as much as digits as its factorization.

4302509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 4302509 is about 2074.2490207302. The cubic root of 4302509 is about 162.6449546815.

The spelling of 4302509 in words is "four million, three hundred two thousand, five hundred nine".