4020021052 has 24 divisors (see below), whose sum is σ = 7416603936. Its totient is φ = 1902793728.

The previous prime is 4020021001. The next prime is 4020021053. The reversal of 4020021052 is 2501200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020021053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216313 + ... + 234160.

It is an arithmetic number, because the mean of its divisors is an integer number (309025164).

Almost surely, 2^4020021052 is an apocalyptic number.

It is an amenable number.

4020021052 is a deficient number, since it is larger than the sum of its proper divisors (3396582884).

4020021052 is a wasteful number, since it uses less digits than its factorization.

4020021052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450597 (or 450595 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4020021052 is about 63403.6359525225. The cubic root of 4020021052 is about 1590.0450987300.

Adding to 4020021052 its reverse (2501200204), we get a palindrome (6521221256).

The spelling of 4020021052 in words is "four billion, twenty million, twenty-one thousand, fifty-two".