2021043 has 8 divisors (see below), whose sum is σ = 2757568. Its totient is φ = 1315944.

The previous prime is 2021029. The next prime is 2021053. The reversal of 2021043 is 3401202.

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

It is not a de Polignac number, because 2021043 - 2⁶ = 2020979 is a prime.

It is a super-2 number, since 2×2021043² = 8169229615698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021003) 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, 7705 + ... + 7962.

It is an arithmetic number, because the mean of its divisors is an integer number (344696).

2^2021043 is an apocalyptic number.

2021043 is a deficient number, since it is larger than the sum of its proper divisors (736525).

2021043 is a wasteful number, since it uses less digits than its factorization.

2021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15713.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2021043 is about 1421.6339191226. The cubic root of 2021043 is about 126.4324395656.

Adding to 2021043 its sum of digits (12), we get a triangular number (2021055 = T₂₀₁₀).

Adding to 2021043 its reverse (3401202), we get a palindrome (5422245).

The spelling of 2021043 in words is "two million, twenty-one thousand, forty-three".