4042520 has 16 divisors (see below), whose sum is σ = 9095760. Its totient is φ = 1616992.

The previous prime is 4042501. The next prime is 4042523. The reversal of 4042520 is 252404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 50492 + ... + 50571.

It is an arithmetic number, because the mean of its divisors is an integer number (568485).

Almost surely, 2^4042520 is an apocalyptic number.

4042520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4042520 is an abundant number, since it is smaller than the sum of its proper divisors (5053240).

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

4042520 is a wasteful number, since it uses less digits than its factorization.

4042520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101074 (or 101070 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 4042520 is about 2010.6018999295. The cubic root of 4042520 is about 159.3005929745.

Adding to 4042520 its reverse (252404), we get a palindrome (4294924).

The spelling of 4042520 in words is "four million, forty-two thousand, five hundred twenty".