4021231 has 8 divisors (see below), whose sum is σ = 4357584. Its totient is φ = 3696000.

The previous prime is 4021229. The next prime is 4021243. The reversal of 4021231 is 1321204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4021231 - 2¹ = 4021229 is a prime.

It is a super-2 number, since 2×4021231² = 32340597510722, which contains 22 as substring.

It is a Duffinian number.

4021231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021211) 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, 2020 + ... + 3481.

It is an arithmetic number, because the mean of its divisors is an integer number (544698).

Almost surely, 2^4021231 is an apocalyptic number.

4021231 is a deficient number, since it is larger than the sum of its proper divisors (336353).

4021231 is a wasteful number, since it uses less digits than its factorization.

4021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561.

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

The square root of 4021231 is about 2005.3007255771. The cubic root of 4021231 is about 159.0204606925.

Adding to 4021231 its reverse (1321204), we get a palindrome (5342435).

The spelling of 4021231 in words is "four million, twenty-one thousand, two hundred thirty-one".