4021272 has 32 divisors (see below), whose sum is σ = 11170800. Its totient is φ = 1340352.

The previous prime is 4021261. The next prime is 4021301. The reversal of 4021272 is 2721204.

4021272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9093 + ... + 9524.

Almost surely, 2^4021272 is an apocalyptic number.

It is an amenable number.

4021272 is an abundant number, since it is smaller than the sum of its proper divisors (7149528).

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

4021272 is a wasteful number, since it uses less digits than its factorization.

4021272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18632 (or 18622 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 4021272 is about 2005.3109484566. The cubic root of 4021272 is about 159.0210011420.

Adding to 4021272 its reverse (2721204), we get a palindrome (6742476).

It can be divided in two parts, 40 and 21272, that added together give a palindrome (21312).

The spelling of 4021272 in words is "four million, twenty-one thousand, two hundred seventy-two".