4134521 has 4 divisors (see below), whose sum is σ = 4147344. Its totient is φ = 4121700.

The previous prime is 4134509. The next prime is 4134539. The reversal of 4134521 is 1254314.

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 a de Polignac number, because none of the positive numbers 2^k-4134521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4134493 and 4134502.

It is not an unprimeable number, because it can be changed into a prime (4134541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5915 + ... + 6576.

It is an arithmetic number, because the mean of its divisors is an integer number (1036836).

Almost surely, 2^4134521 is an apocalyptic number.

It is an amenable number.

4134521 is a deficient number, since it is larger than the sum of its proper divisors (12823).

4134521 is a wasteful number, since it uses less digits than its factorization.

4134521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12822.

The product of its digits is 480, while the sum is 20.

The square root of 4134521 is about 2033.3521583828. The cubic root of 4134521 is about 160.5000113224.

Adding to 4134521 its reverse (1254314), we get a palindrome (5388835).

The spelling of 4134521 in words is "four million, one hundred thirty-four thousand, five hundred twenty-one".