305421420020 has 24 divisors (see below), whose sum is σ = 675142087200. Its totient is φ = 115738643232.

The previous prime is 305421420013. The next prime is 305421420043. The reversal of 305421420020 is 20024124503.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 401869910 + ... + 401870669.

It is an arithmetic number, because the mean of its divisors is an integer number (28130920300).

Almost surely, 2^305421420020 is an apocalyptic number.

It is an amenable number.

305421420020 is an abundant number, since it is smaller than the sum of its proper divisors (369720667180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305421420020 is a wasteful number, since it uses less digits than its factorization.

305421420020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803740607 (or 803740605 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 305421420020 its reverse (20024124503), we get a palindrome (325445544523).

The spelling of 305421420020 in words is "three hundred five billion, four hundred twenty-one million, four hundred twenty thousand, twenty".