30201421 has 2 divisors, whose sum is σ = 30201422. Its totient is φ = 30201420.

The previous prime is 30201419. The next prime is 30201439. The reversal of 30201421 is 12410203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21261321 + 8940100 = 4611^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 30201421 - 2¹ = 30201419 is a prime.

Together with 30201419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30201481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15100710 + 15100711.

It is an arithmetic number, because the mean of its divisors is an integer number (15100711).

Almost surely, 2^30201421 is an apocalyptic number.

It is an amenable number.

30201421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30201421 is an equidigital number, since it uses as much as digits as its factorization.

30201421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 30201421 is about 5495.5819528054. The cubic root of 30201421 is about 311.4171021443.

Adding to 30201421 its reverse (12410203), we get a palindrome (42611624).

The spelling of 30201421 in words is "thirty million, two hundred one thousand, four hundred twenty-one".