30121244424 has 24 divisors (see below), whose sum is σ = 81578370510. Its totient is φ = 10040414784.

The previous prime is 30121244401. The next prime is 30121244437. The reversal of 30121244424 is 42444212103.

30121244424 is a `hidden beast` number, since 3 + 0 + 1 + 212 + 4 + 442 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19539007524 + 10582236900 = 139782^2 + 102870^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 5 ways as a sum of consecutive naturals, for example, 209175237 + ... + 209175380.

Almost surely, 2^30121244424 is an apocalyptic number.

It is an amenable number.

30121244424 is an abundant number, since it is smaller than the sum of its proper divisors (51457126086).

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

30121244424 is a wasteful number, since it uses less digits than its factorization.

30121244424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418350629 (or 418350622 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 30121244424 its reverse (42444212103), we get a palindrome (72565456527).

The spelling of 30121244424 in words is "thirty billion, one hundred twenty-one million, two hundred forty-four thousand, four hundred twenty-four".