30120004421 has 8 divisors (see below), whose sum is σ = 32438544600. Its totient is φ = 27801695232.

The previous prime is 30120004351. The next prime is 30120004427. The reversal of 30120004421 is 12440002103.

It can be written as a sum of positive squares in 4 ways, for example, as 5105102500 + 25014901921 = 71450^2 + 158161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30120004421 - 2²² = 30115810117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30120004421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120004427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291221 + ... + 380853.

It is an arithmetic number, because the mean of its divisors is an integer number (4054818075).

Almost surely, 2^30120004421 is an apocalyptic number.

It is an amenable number.

30120004421 is a deficient number, since it is larger than the sum of its proper divisors (2318540179).

30120004421 is a wasteful number, since it uses less digits than its factorization.

30120004421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115495.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 30120004421 its reverse (12440002103), we get a palindrome (42560006524).

The spelling of 30120004421 in words is "thirty billion, one hundred twenty million, four thousand, four hundred twenty-one".