2443021 has 8 divisors (see below), whose sum is σ = 2834240. Its totient is φ = 2062368.

The previous prime is 2442977. The next prime is 2443027. The reversal of 2443021 is 1203442.

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

It is not a de Polignac number, because 2443021 - 2¹¹ = 2440973 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 2442986 and 2443004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443027) 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, 2136 + ... + 3073.

It is an arithmetic number, because the mean of its divisors is an integer number (354280).

2^2443021 is an apocalyptic number.

It is an amenable number.

2443021 is a deficient number, since it is larger than the sum of its proper divisors (391219).

2443021 is an equidigital number, since it uses as much as digits as its factorization.

2443021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2443021 is about 1563.0166345884. The cubic root of 2443021 is about 134.6818479710.

Adding to 2443021 its reverse (1203442), we get a palindrome (3646463).

The spelling of 2443021 in words is "two million, four hundred forty-three thousand, twenty-one".