130420321 has 2 divisors, whose sum is σ = 130420322. Its totient is φ = 130420320.

The previous prime is 130420273. The next prime is 130420357. The reversal of 130420321 is 123024031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70140625 + 60279696 = 8375^2 + 7764^2 .

It is a cyclic number.

It is not a de Polignac number, because 130420321 - 2¹¹ = 130418273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130420295 and 130420304.

It is not a weakly prime, because it can be changed into another prime (130421321) 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, 65210160 + 65210161.

It is an arithmetic number, because the mean of its divisors is an integer number (65210161).

Almost surely, 2^130420321 is an apocalyptic number.

It is an amenable number.

130420321 is a deficient number, since it is larger than the sum of its proper divisors (1).

130420321 is an equidigital number, since it uses as much as digits as its factorization.

130420321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 130420321 is about 11420.1716712141. The cubic root of 130420321 is about 507.1250788791.

Adding to 130420321 its reverse (123024031), we get a palindrome (253444352).

The spelling of 130420321 in words is "one hundred thirty million, four hundred twenty thousand, three hundred twenty-one".