30120430020 has 48 divisors (see below), whose sum is σ = 84358713600. Its totient is φ = 8030066176.

The previous prime is 30120430007. The next prime is 30120430027. The reversal of 30120430020 is 2003402103.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (30120430027) 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, 180949 + ... + 304931.

It is an arithmetic number, because the mean of its divisors is an integer number (1757473200).

Almost surely, 2^30120430020 is an apocalyptic number.

30120430020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30120430020 is an abundant number, since it is smaller than the sum of its proper divisors (54238283580).

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

30120430020 is a wasteful number, since it uses less digits than its factorization.

30120430020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128044 (or 128042 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 30120430020 its reverse (2003402103), we get a palindrome (32123832123).

The spelling of 30120430020 in words is "thirty billion, one hundred twenty million, four hundred thirty thousand, twenty".