4021131 has 8 divisors (see below), whose sum is σ = 5400640. Its totient is φ = 2661192.

The previous prime is 4021099. The next prime is 4021151. The reversal of 4021131 is 1311204.

It is a happy number.

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

It is not a de Polignac number, because 4021131 - 2⁵ = 4021099 is a prime.

It is a super-2 number, since 2×4021131² = 32338989038322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4021151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4405 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (675080).

Almost surely, 2^4021131 is an apocalyptic number.

4021131 is a deficient number, since it is larger than the sum of its proper divisors (1379509).

4021131 is a wasteful number, since it uses less digits than its factorization.

4021131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9785.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 4021131 is about 2005.2757915060. The cubic root of 4021131 is about 159.0191425076.

Adding to 4021131 its reverse (1311204), we get a palindrome (5332335).

The spelling of 4021131 in words is "four million, twenty-one thousand, one hundred thirty-one".