30345421 has 4 divisors (see below), whose sum is σ = 30394144. Its totient is φ = 30296700.

The previous prime is 30345407. The next prime is 30345433. The reversal of 30345421 is 12454303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12454303 = 2617 ⋅4759.

It is a cyclic number.

It is not a de Polignac number, because 30345421 - 2⁵ = 30345389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30345392 and 30345401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30348421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23415 + ... + 24676.

It is an arithmetic number, because the mean of its divisors is an integer number (7598536).

Almost surely, 2^30345421 is an apocalyptic number.

It is an amenable number.

30345421 is a deficient number, since it is larger than the sum of its proper divisors (48723).

30345421 is an equidigital number, since it uses as much as digits as its factorization.

30345421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48722.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 30345421 is about 5508.6678062849. The cubic root of 30345421 is about 311.9112618830.

Adding to 30345421 its reverse (12454303), we get a palindrome (42799724).

The spelling of 30345421 in words is "thirty million, three hundred forty-five thousand, four hundred twenty-one".