30420122128 has 80 divisors (see below), whose sum is σ = 65474952192. Its totient is φ = 13689456000.

The previous prime is 30420122059. The next prime is 30420122129. The reversal of 30420122128 is 82122102403.

It is not an unprimeable number, because it can be changed into a prime (30420122129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2143825 + ... + 2157967.

Almost surely, 2^30420122128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30420122128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32737476096).

30420122128 is an abundant number, since it is smaller than the sum of its proper divisors (35054830064).

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

30420122128 is a wasteful number, since it uses less digits than its factorization.

30420122128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14285 (or 14257 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The spelling of 30420122128 in words is "thirty billion, four hundred twenty million, one hundred twenty-two thousand, one hundred twenty-eight".