2124305 has 4 divisors (see below), whose sum is σ = 2549172.
Its totient is φ = 1699440.
The previous prime is 2124299. The next prime is 2124319. The reversal of 2124305 is 5034212.
Adding to 2124305 its reverse (5034212), we get a palindrome (7158517).
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 1430416 + 693889 = 1196^2 + 833^2
It is not a de Polignac number, because 2124305 - 24 = 2124289 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212426 + ... + 212435.
It is an arithmetic number, because the mean of its divisors is an integer number (637293).
22124305 is an apocalyptic number.
It is an amenable number.
2124305 is a deficient number, since it is larger than the sum of its proper divisors (424867).
2124305 is an equidigital number, since it uses as much as digits as its factorization.
2124305 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 424866.
The product of its (nonzero) digits is 240, while the sum is 17.
The square root of 2124305 is about 1457.4995711835.
The cubic root of 2124305 is about 128.5500619991.
The spelling of 2124305 in words is "two million, one hundred twenty-four thousand, three hundred five".