30424021 has 2 divisors, whose sum is σ = 30424022. Its totient is φ = 30424020.

The previous prime is 30424013. The next prime is 30424057. The reversal of 30424021 is 12042403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30371121 + 52900 = 5511^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 30424021 - 2³ = 30424013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30423986 and 30424004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30424061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15212010 + 15212011.

It is an arithmetic number, because the mean of its divisors is an integer number (15212011).

Almost surely, 2^30424021 is an apocalyptic number.

It is an amenable number.

30424021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30424021 is an equidigital number, since it uses as much as digits as its factorization.

30424021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 30424021 is about 5515.7974038211. The cubic root of 30424021 is about 312.1803314566.

Adding to 30424021 its reverse (12042403), we get a palindrome (42466424).

It can be divided in two parts, 3042402 and 1, that added together give a palindrome (3042403).

The spelling of 30424021 in words is "thirty million, four hundred twenty-four thousand, twenty-one".