30120431420 has 48 divisors (see below), whose sum is σ = 65670974208. Its totient is φ = 11592084480.

The previous prime is 30120431417. The next prime is 30120431437. The reversal of 30120431420 is 2413402103.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30120431392 and 30120431401.

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 15 ways as a sum of consecutive naturals, for example, 33149 + ... + 247668.

It is an arithmetic number, because the mean of its divisors is an integer number (1368145296).

Almost surely, 2^30120431420 is an apocalyptic number.

It is an amenable number.

30120431420 is an abundant number, since it is smaller than the sum of its proper divisors (35550542788).

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

30120431420 is a wasteful number, since it uses less digits than its factorization.

30120431420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281030 (or 281028 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30120431420 its reverse (2413402103), we get a palindrome (32533833523).

The spelling of 30120431420 in words is "thirty billion, one hundred twenty million, four hundred thirty-one thousand, four hundred twenty".