4200021012 has 48 divisors (see below), whose sum is σ = 10696154112. Its totient is φ = 1272115680.

The previous prime is 4200021011. The next prime is 4200021013. The reversal of 4200021012 is 2101200024.

It is an interprime number because it is at equal distance from previous prime (4200021011) and next prime (4200021013).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200021011) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 316503 + ... + 329505.

It is an arithmetic number, because the mean of its divisors is an integer number (222836544).

Almost surely, 2^4200021012 is an apocalyptic number.

It is an amenable number.

4200021012 is an abundant number, since it is smaller than the sum of its proper divisors (6496133100).

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

4200021012 is a wasteful number, since it uses less digits than its factorization.

4200021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15468 (or 15466 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 4200021012 is about 64807.5690949753. The cubic root of 4200021012 is about 1613.4313366044.

Adding to 4200021012 its reverse (2101200024), we get a palindrome (6301221036).

The spelling of 4200021012 in words is "four billion, two hundred million, twenty-one thousand, twelve".