30301421 has 2 divisors, whose sum is σ = 30301422. Its totient is φ = 30301420.

The previous prime is 30301399. The next prime is 30301423. The reversal of 30301421 is 12410303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29311396 + 990025 = 5414^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 30301421 - 2¹⁰ = 30300397 is a prime.

It is a super-2 number, since 2×30301421² = 1836352229238482, which contains 22 as substring.

Together with 30301423, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30301396 and 30301405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30301423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15150710 + 15150711.

It is an arithmetic number, because the mean of its divisors is an integer number (15150711).

Almost surely, 2^30301421 is an apocalyptic number.

It is an amenable number.

30301421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30301421 is an equidigital number, since it uses as much as digits as its factorization.

30301421 is an evil number, because the sum of its binary digits is even.

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

The square root of 30301421 is about 5504.6726514844. The cubic root of 30301421 is about 311.7604347993.

Adding to 30301421 its reverse (12410303), we get a palindrome (42711724).

The spelling of 30301421 in words is "thirty million, three hundred one thousand, four hundred twenty-one".