30130421 has 8 divisors (see below), whose sum is σ = 30569400. Its totient is φ = 29694400.

The previous prime is 30130417. The next prime is 30130439. The reversal of 30130421 is 12403103.

It can be written as a sum of positive squares in 4 ways, for example, as 264196 + 29866225 = 514^2 + 5465^2 .

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 30130421 - 2² = 30130417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30130396 and 30130405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30130021) 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, 26615 + ... + 27723.

It is an arithmetic number, because the mean of its divisors is an integer number (3821175).

Almost surely, 2^30130421 is an apocalyptic number.

It is an amenable number.

30130421 is a deficient number, since it is larger than the sum of its proper divisors (438979).

30130421 is a wasteful number, since it uses less digits than its factorization.

30130421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30130421 is about 5489.1184173781. The cubic root of 30130421 is about 311.1728756293.

Adding to 30130421 its reverse (12403103), we get a palindrome (42533524).

The spelling of 30130421 in words is "thirty million, one hundred thirty thousand, four hundred twenty-one".