4020520252 has 24 divisors (see below), whose sum is σ = 8043235200. Its totient is φ = 1722609840.

The previous prime is 4020520151. The next prime is 4020520277. The reversal of 4020520252 is 2520250204.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96999 + ... + 132097.

It is an arithmetic number, because the mean of its divisors is an integer number (335134800).

Almost surely, 2^4020520252 is an apocalyptic number.

It is an amenable number.

4020520252 is an abundant number, since it is smaller than the sum of its proper divisors (4022714948).

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

4020520252 is a wasteful number, since it uses less digits than its factorization.

4020520252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39201 (or 39199 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 4020520252 is about 63407.5725130682. The cubic root of 4020520252 is about 1590.1109124534.

Adding to 4020520252 its reverse (2520250204), we get a palindrome (6540770456).

The spelling of 4020520252 in words is "four billion, twenty million, five hundred twenty thousand, two hundred fifty-two".