30238421 has 2 divisors, whose sum is σ = 30238422. Its totient is φ = 30238420.

The previous prime is 30238409. The next prime is 30238433. The reversal of 30238421 is 12483203.

It is a balanced prime because it is at equal distance from previous prime (30238409) and next prime (30238433).

It can be written as a sum of positive squares in only one way, i.e., 27300625 + 2937796 = 5225^2 + 1714^2 .

It is a cyclic number.

It is not a de Polignac number, because 30238421 - 2¹⁰ = 30237397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30238441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15119210 + 15119211.

It is an arithmetic number, because the mean of its divisors is an integer number (15119211).

Almost surely, 2^30238421 is an apocalyptic number.

It is an amenable number.

30238421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30238421 is an equidigital number, since it uses as much as digits as its factorization.

30238421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 30238421 is about 5498.9472628859. The cubic root of 30238421 is about 311.5442234319.

The spelling of 30238421 in words is "thirty million, two hundred thirty-eight thousand, four hundred twenty-one".