4142325521 has 2 divisors, whose sum is σ = 4142325522. Its totient is φ = 4142325520.

The previous prime is 4142325511. The next prime is 4142325533. The reversal of 4142325521 is 1255232414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2610699025 + 1531626496 = 51095^2 + 39136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4142325521 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4142325511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071162760 + 2071162761.

It is an arithmetic number, because the mean of its divisors is an integer number (2071162761).

Almost surely, 2^4142325521 is an apocalyptic number.

It is an amenable number.

4142325521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4142325521 is an equidigital number, since it uses as much as digits as its factorization.

4142325521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 29.

The square root of 4142325521 is about 64360.9005608219. The cubic root of 4142325521 is about 1606.0093702912.

Adding to 4142325521 its reverse (1255232414), we get a palindrome (5397557935).

The spelling of 4142325521 in words is "four billion, one hundred forty-two million, three hundred twenty-five thousand, five hundred twenty-one".