210420424009 has 4 divisors (see below), whose sum is σ = 213083973760. Its totient is φ = 207756874260.

The previous prime is 210420424007. The next prime is 210420424037. The reversal of 210420424009 is 900424024012.

210420424009 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210420424009 - 2¹ = 210420424007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210420424007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331774757 + ... + 1331774914.

It is an arithmetic number, because the mean of its divisors is an integer number (53270993440).

Almost surely, 2^210420424009 is an apocalyptic number.

It is an amenable number.

210420424009 is a deficient number, since it is larger than the sum of its proper divisors (2663549751).

210420424009 is an equidigital number, since it uses as much as digits as its factorization.

210420424009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663549750.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 210420424009 in words is "two hundred ten billion, four hundred twenty million, four hundred twenty-four thousand, nine".