4000530021 has 16 divisors (see below), whose sum is σ = 5482305600. Its totient is φ = 2592995328.

The previous prime is 4000530011. The next prime is 4000530041. The reversal of 4000530021 is 1200350004.

It is not a de Polignac number, because 4000530021 - 2⁷ = 4000529893 is a prime.

It is a super-3 number, since 3×4000530021³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000530011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143610 + ... + 169188.

It is an arithmetic number, because the mean of its divisors is an integer number (342644100).

Almost surely, 2^4000530021 is an apocalyptic number.

It is an amenable number.

4000530021 is a deficient number, since it is larger than the sum of its proper divisors (1481775579).

4000530021 is a wasteful number, since it uses less digits than its factorization.

4000530021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27028.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 4000530021 is about 63249.7432484907. The cubic root of 4000530021 is about 1587.4711618627.

Adding to 4000530021 its reverse (1200350004), we get a palindrome (5200880025).

The spelling of 4000530021 in words is "four billion, five hundred thirty thousand, twenty-one".