4131021 has 16 divisors (see below), whose sum is σ = 5765760. Its totient is φ = 2627520.

The previous prime is 4130977. The next prime is 4131031. The reversal of 4131021 is 1201314.

It is a happy number.

It is not a de Polignac number, because 4131021 - 2⁶ = 4130957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4130988 and 4131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4131031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8731 + ... + 9191.

It is an arithmetic number, because the mean of its divisors is an integer number (360360).

Almost surely, 2^4131021 is an apocalyptic number.

It is an amenable number.

4131021 is a deficient number, since it is larger than the sum of its proper divisors (1634739).

4131021 is a wasteful number, since it uses less digits than its factorization.

4131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596.

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

The square root of 4131021 is about 2032.4913283948. The cubic root of 4131021 is about 160.4547091276.

Adding to 4131021 its reverse (1201314), we get a palindrome (5332335).

The spelling of 4131021 in words is "four million, one hundred thirty-one thousand, twenty-one".