300300021 has 16 divisors (see below), whose sum is σ = 508444800. Its totient is φ = 171599904.

The previous prime is 300300001. The next prime is 300300037. The reversal of 300300021 is 120003003.

It is a happy number.

It is not a de Polignac number, because 300300021 - 2¹⁰ = 300298997 is a prime.

It is a super-2 number, since 2×300300021² = 180360205225200882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 300299976 and 300300012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300300001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 794256 + ... + 794633.

It is an arithmetic number, because the mean of its divisors is an integer number (31777800).

Almost surely, 2^300300021 is an apocalyptic number.

It is an amenable number.

300300021 is a deficient number, since it is larger than the sum of its proper divisors (208144779).

300300021 is a wasteful number, since it uses less digits than its factorization.

300300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588905 (or 1588899 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 300300021 is about 17329.1667716599. The cubic root of 300300021 is about 669.6560356684.

Adding to 300300021 its reverse (120003003), we get a palindrome (420303024).

The spelling of 300300021 in words is "three hundred million, three hundred thousand, twenty-one".