2044021 has 8 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 1735008.

The previous prime is 2044013. The next prime is 2044027. The reversal of 2044021 is 1204402.

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 2044021 - 2³ = 2044013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2043992 and 2044010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044027) 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, 616 + ... + 2113.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

2^2044021 is an apocalyptic number.

It is an amenable number.

2044021 is a deficient number, since it is larger than the sum of its proper divisors (314699).

2044021 is a wasteful number, since it uses less digits than its factorization.

2044021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2044021 is about 1429.6926243078. The cubic root of 2044021 is about 126.9097877542.

Adding to 2044021 its reverse (1204402), we get a palindrome (3248423).

It can be divided in two parts, 204 and 4021, that added together give a square (4225 = 65²).

The spelling of 2044021 in words is "two million, forty-four thousand, twenty-one".