4130521 has 4 divisors (see below), whose sum is σ = 4169232. Its totient is φ = 4091812.

The previous prime is 4130519. The next prime is 4130527. The reversal of 4130521 is 1250314.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4130521 - 2¹ = 4130519 is a prime.

It is a super-2 number, since 2×4130521² = 34122407462882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4130495 and 4130504.

It is not an unprimeable number, because it can be changed into a prime (4130527) 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 in 3 ways as a sum of consecutive naturals, for example, 19195 + ... + 19408.

It is an arithmetic number, because the mean of its divisors is an integer number (1042308).

Almost surely, 2^4130521 is an apocalyptic number.

It is an amenable number.

4130521 is a deficient number, since it is larger than the sum of its proper divisors (38711).

4130521 is a wasteful number, since it uses less digits than its factorization.

4130521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38710.

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

The square root of 4130521 is about 2032.3683229179. The cubic root of 4130521 is about 160.4482352969.

Adding to 4130521 its reverse (1250314), we get a palindrome (5380835).

The spelling of 4130521 in words is "four million, one hundred thirty thousand, five hundred twenty-one".