4021312 has 28 divisors (see below), whose sum is σ = 8402320. Its totient is φ = 1904256.

The previous prime is 4021309. The next prime is 4021349. The reversal of 4021312 is 2131204.

It is a junction number, because it is equal to n+sod(n) for n = 4021292 and 4021301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438 + ... + 2869.

Almost surely, 2^4021312 is an apocalyptic number.

It is an amenable number.

4021312 is an abundant number, since it is smaller than the sum of its proper divisors (4381008).

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

4021312 is a wasteful number, since it uses less digits than its factorization.

4021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338 (or 3328 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 4021312 is about 2005.3209219474. The cubic root of 4021312 is about 159.0215284062.

Adding to 4021312 its reverse (2131204), we get a palindrome (6152516).

The spelling of 4021312 in words is "four million, twenty-one thousand, three hundred twelve".