130040521 has 8 divisors (see below), whose sum is σ = 141963080. Its totient is φ = 118392192.

The previous prime is 130040509. The next prime is 130040527. The reversal of 130040521 is 125040031.

It can be written as a sum of positive squares in 4 ways, for example, as 1784896 + 128255625 = 1336^2 + 11325^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130040521 - 2⁵ = 130040489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130040495 and 130040504.

It is not an unprimeable number, because it can be changed into a prime (130040527) 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 in 7 ways as a sum of consecutive naturals, for example, 67566 + ... + 69463.

It is an arithmetic number, because the mean of its divisors is an integer number (17745385).

Almost surely, 2^130040521 is an apocalyptic number.

It is an amenable number.

130040521 is a deficient number, since it is larger than the sum of its proper divisors (11922559).

130040521 is a wasteful number, since it uses less digits than its factorization.

130040521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137115.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 130040521 is about 11403.5310759431. The cubic root of 130040521 is about 506.6323300734.

Adding to 130040521 its reverse (125040031), we get a palindrome (255080552).

The spelling of 130040521 in words is "one hundred thirty million, forty thousand, five hundred twenty-one".