305421421020 has 96 divisors (see below), whose sum is σ = 860559094080. Its totient is φ = 80933898240.

The previous prime is 305421421009. The next prime is 305421421057. The reversal of 305421421020 is 20124124503.

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 31 ways as a sum of consecutive naturals, for example, 24293296 + ... + 24305864.

It is an arithmetic number, because the mean of its divisors is an integer number (8964157230).

Almost surely, 2^305421421020 is an apocalyptic number.

305421421020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

305421421020 is an abundant number, since it is smaller than the sum of its proper divisors (555137673060).

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

305421421020 is a wasteful number, since it uses less digits than its factorization.

305421421020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15095 (or 15093 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 305421421020 its reverse (20124124503), we get a palindrome (325545545523).

The spelling of 305421421020 in words is "three hundred five billion, four hundred twenty-one million, four hundred twenty-one thousand, twenty".