4042530 has 24 divisors (see below), whose sum is σ = 10510812. Its totient is φ = 1077984.

The previous prime is 4042523. The next prime is 4042543. The reversal of 4042530 is 352404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3721041 + 321489 = 1929^2 + 567^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 22369 + ... + 22548.

Almost surely, 2^4042530 is an apocalyptic number.

4042530 is an abundant number, since it is smaller than the sum of its proper divisors (6468282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4042530 is a wasteful number, since it uses less digits than its factorization.

4042530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44930 (or 44927 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4042530 is about 2010.6043867454. The cubic root of 4042530 is about 159.3007243286.

Adding to 4042530 its reverse (352404), we get a palindrome (4394934).

The spelling of 4042530 in words is "four million, forty-two thousand, five hundred thirty".