8042530 has 16 divisors (see below), whose sum is σ = 15328440. Its totient is φ = 3027712.

The previous prime is 8042521. The next prime is 8042533. The reversal of 8042530 is 352408.

It can be written as a sum of positive squares in 4 ways, for example, as 5948721 + 2093809 = 2439^2 + 1447^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8042533) 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, 23485 + ... + 23824.

Almost surely, 2^8042530 is an apocalyptic number.

8042530 is a deficient number, since it is larger than the sum of its proper divisors (7285910).

8042530 is a wasteful number, since it uses less digits than its factorization.

8042530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47333.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 8042530 is about 2835.9354717624. The cubic root of 8042530 is about 200.3537904592.

Adding to 8042530 its reverse (352408), we get a palindrome (8394938).

The spelling of 8042530 in words is "eight million, forty-two thousand, five hundred thirty".