305020422420 has 144 divisors (see below), whose sum is σ = 993869751168. Its totient is φ = 69692663040.

The previous prime is 305020422419. The next prime is 305020422439. The reversal of 305020422420 is 24224020503.

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 (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8393209 + ... + 8429471.

It is an arithmetic number, because the mean of its divisors is an integer number (6901873272).

Almost surely, 2^305020422420 is an apocalyptic number.

305020422420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305020422420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496934875584).

305020422420 is an abundant number, since it is smaller than the sum of its proper divisors (688849328748).

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

305020422420 is a wasteful number, since it uses less digits than its factorization.

305020422420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39150 (or 39141 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

Adding to 305020422420 its reverse (24224020503), we get a palindrome (329244442923).

The spelling of 305020422420 in words is "three hundred five billion, twenty million, four hundred twenty-two thousand, four hundred twenty".