2420423309 has 2 divisors, whose sum is σ = 2420423310. Its totient is φ = 2420423308.

The previous prime is 2420423273. The next prime is 2420423311. The reversal of 2420423309 is 9033240242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1730310409 + 690112900 = 41597^2 + 26270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2420423309 - 2²⁰ = 2419374733 is a prime.

Together with 2420423311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2420423329) 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, 1210211654 + 1210211655.

It is an arithmetic number, because the mean of its divisors is an integer number (1210211655).

Almost surely, 2^2420423309 is an apocalyptic number.

It is an amenable number.

2420423309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2420423309 is an equidigital number, since it uses as much as digits as its factorization.

2420423309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 2420423309 is about 49197.7978064059. The cubic root of 2420423309 is about 1342.6529658891.

The spelling of 2420423309 in words is "two billion, four hundred twenty million, four hundred twenty-three thousand, three hundred nine".