4200021312 has 56 divisors (see below), whose sum is σ = 11120542656. Its totient is φ = 1399001088.

The previous prime is 4200021289. The next prime is 4200021313. The reversal of 4200021312 is 2131200024.

It is a junction number, because it is equal to n+sod(n) for n = 4200021291 and 4200021300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200021313) 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 7 ways as a sum of consecutive naturals, for example, 289168 + ... + 303344.

Almost surely, 2^4200021312 is an apocalyptic number.

It is an amenable number.

4200021312 is an abundant number, since it is smaller than the sum of its proper divisors (6920521344).

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

4200021312 is a wasteful number, since it uses less digits than its factorization.

4200021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15735 (or 15725 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 4200021312 is about 64807.5714095197. The cubic root of 4200021312 is about 1613.4313750192.

Adding to 4200021312 its reverse (2131200024), we get a palindrome (6331221336).

The spelling of 4200021312 in words is "four billion, two hundred million, twenty-one thousand, three hundred twelve".