4106021 has 4 divisors (see below), whose sum is σ = 4132332. Its totient is φ = 4079712.

The previous prime is 4106017. The next prime is 4106041. The reversal of 4106021 is 1206014.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 829921 + 3276100 = 911^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 4106021 - 2² = 4106017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4105987 and 4106005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4106041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12920 + ... + 13233.

It is an arithmetic number, because the mean of its divisors is an integer number (1033083).

Almost surely, 2^4106021 is an apocalyptic number.

It is an amenable number.

4106021 is a deficient number, since it is larger than the sum of its proper divisors (26311).

4106021 is a wasteful number, since it uses less digits than its factorization.

4106021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26310.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 4106021 is about 2026.3319076597. The cubic root of 4106021 is about 160.1303755059.

The spelling of 4106021 in words is "four million, one hundred six thousand, twenty-one".