130542637 has 2 divisors, whose sum is σ = 130542638. Its totient is φ = 130542636.

The previous prime is 130542631. The next prime is 130542683. The reversal of 130542637 is 736245031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79762761 + 50779876 = 8931^2 + 7126^2 .

It is an emirp because it is prime and its reverse (736245031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130542637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130542599 and 130542608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130542631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65271318 + 65271319.

It is an arithmetic number, because the mean of its divisors is an integer number (65271319).

Almost surely, 2^130542637 is an apocalyptic number.

It is an amenable number.

130542637 is a deficient number, since it is larger than the sum of its proper divisors (1).

130542637 is an equidigital number, since it uses as much as digits as its factorization.

130542637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 130542637 is about 11425.5256771844. The cubic root of 130542637 is about 507.2835667822.

Adding to 130542637 its reverse (736245031), we get a palindrome (866787668).

The spelling of 130542637 in words is "one hundred thirty million, five hundred forty-two thousand, six hundred thirty-seven".