4142505521 has 24 divisors (see below), whose sum is σ = 5280222816. Its totient is φ = 3213611520.

The previous prime is 4142505517. The next prime is 4142505529. The reversal of 4142505521 is 1255052414.

It is not a de Polignac number, because 4142505521 - 2² = 4142505517 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4142505529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105425 + ... + 139281.

It is an arithmetic number, because the mean of its divisors is an integer number (220009284).

Almost surely, 2^4142505521 is an apocalyptic number.

It is an amenable number.

4142505521 is a deficient number, since it is larger than the sum of its proper divisors (1137717295).

4142505521 is a wasteful number, since it uses less digits than its factorization.

4142505521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34109 (or 34102 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 4142505521 is about 64362.2989101539. The cubic root of 4142505521 is about 1606.0326323854.

Adding to 4142505521 its reverse (1255052414), we get a palindrome (5397557935).

The spelling of 4142505521 in words is "four billion, one hundred forty-two million, five hundred five thousand, five hundred twenty-one".