130430021 has 2 divisors, whose sum is σ = 130430022. Its totient is φ = 130430020.

The previous prime is 130430011. The next prime is 130430057. The reversal of 130430021 is 120034031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90916225 + 39513796 = 9535^2 + 6286^2 .

It is a cyclic number.

It is not a de Polignac number, because 130430021 - 2¹⁴ = 130413637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130429978 and 130430005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130430011) 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 as a sum of consecutive naturals, namely, 65215010 + 65215011.

It is an arithmetic number, because the mean of its divisors is an integer number (65215011).

Almost surely, 2^130430021 is an apocalyptic number.

It is an amenable number.

130430021 is a deficient number, since it is larger than the sum of its proper divisors (1).

130430021 is an equidigital number, since it uses as much as digits as its factorization.

130430021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 130430021 is about 11420.5963504539. The cubic root of 130430021 is about 507.1376510286.

Adding to 130430021 its reverse (120034031), we get a palindrome (250464052).

The spelling of 130430021 in words is "one hundred thirty million, four hundred thirty thousand, twenty-one".