130002421 has 2 divisors, whose sum is σ = 130002422. Its totient is φ = 130002420.

The previous prime is 130002419. The next prime is 130002449. The reversal of 130002421 is 124200031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95062500 + 34939921 = 9750^2 + 5911^2 .

It is a cyclic number.

It is not a de Polignac number, because 130002421 - 2¹ = 130002419 is a prime.

It is a super-2 number, since 2×130002421² = 33801258931722482, which contains 22 as substring.

Together with 130002419, 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 (130002401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65001210 + 65001211.

It is an arithmetic number, because the mean of its divisors is an integer number (65001211).

Almost surely, 2^130002421 is an apocalyptic number.

It is an amenable number.

130002421 is a deficient number, since it is larger than the sum of its proper divisors (1).

130002421 is an equidigital number, since it uses as much as digits as its factorization.

130002421 is an odious number, because the sum of its binary digits is odd.

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

The square root of 130002421 is about 11401.8604183703. The cubic root of 130002421 is about 506.5828465815.

Adding to 130002421 its reverse (124200031), we get a palindrome (254202452).

The spelling of 130002421 in words is "one hundred thirty million, two thousand, four hundred twenty-one".