2420305 has 4 divisors (see below), whose sum is σ = 2904372. Its totient is φ = 1936240.

The previous prime is 2420291. The next prime is 2420309. The reversal of 2420305 is 5030242.

2420305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 524176 + 1896129 = 724^2 + 1377^2 .

It is not a de Polignac number, because 2420305 - 2⁹ = 2419793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2420309) 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 in 3 ways as a sum of consecutive naturals, for example, 242026 + ... + 242035.

It is an arithmetic number, because the mean of its divisors is an integer number (726093).

2^2420305 is an apocalyptic number.

It is an amenable number.

2420305 is a deficient number, since it is larger than the sum of its proper divisors (484067).

2420305 is an equidigital number, since it uses as much as digits as its factorization.

2420305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484066.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 2420305 is about 1555.7329462347. The cubic root of 2420305 is about 134.2631089479.

Adding to 2420305 its reverse (5030242), we get a palindrome (7450547).

The spelling of 2420305 in words is "two million, four hundred twenty thousand, three hundred five".