4105021 has 4 divisors (see below), whose sum is σ = 4137472. Its totient is φ = 4072572.

The previous prime is 4105019. The next prime is 4105033. The reversal of 4105021 is 1205014.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4105021 - 2¹ = 4105019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4104992 and 4105010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4105001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16035 + ... + 16288.

It is an arithmetic number, because the mean of its divisors is an integer number (1034368).

Almost surely, 2^4105021 is an apocalyptic number.

It is an amenable number.

4105021 is a deficient number, since it is larger than the sum of its proper divisors (32451).

4105021 is a wasteful number, since it uses less digits than its factorization.

4105021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32450.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 4105021 is about 2026.0851413502. The cubic root of 4105021 is about 160.1173748112.

The spelling of 4105021 in words is "four million, one hundred five thousand, twenty-one".