130342921 has 2 divisors, whose sum is σ = 130342922. Its totient is φ = 130342920.

The previous prime is 130342913. The next prime is 130342957. The reversal of 130342921 is 129243031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117418896 + 12924025 = 10836^2 + 3595^2 .

It is an emirp because it is prime and its reverse (129243031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130342921 - 2³ = 130342913 is a prime.

It is not a weakly prime, because it can be changed into another prime (130342981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65171460 + 65171461.

It is an arithmetic number, because the mean of its divisors is an integer number (65171461).

Almost surely, 2^130342921 is an apocalyptic number.

It is an amenable number.

130342921 is a deficient number, since it is larger than the sum of its proper divisors (1).

130342921 is an equidigital number, since it uses as much as digits as its factorization.

130342921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 130342921 is about 11416.7824276370. The cubic root of 130342921 is about 507.0247385636.

Adding to 130342921 its reverse (129243031), we get a palindrome (259585952).

The spelling of 130342921 in words is "one hundred thirty million, three hundred forty-two thousand, nine hundred twenty-one".