2943021 has 16 divisors (see below), whose sum is σ = 4088448. Its totient is φ = 1881600.

The previous prime is 2943001. The next prime is 2943079. The reversal of 2943021 is 1203492.

2943021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2943021 - 2¹⁵ = 2910253 is a prime.

It is a super-2 number, since 2×2943021² = 17322745212882, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2943001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8565 + ... + 8901.

It is an arithmetic number, because the mean of its divisors is an integer number (255528).

2^2943021 is an apocalyptic number.

It is an amenable number.

2943021 is a deficient number, since it is larger than the sum of its proper divisors (1145427).

2943021 is a wasteful number, since it uses less digits than its factorization.

2943021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2943021 is about 1715.5235352510. The cubic root of 2943021 is about 143.3060262864.

The spelling of 2943021 in words is "two million, nine hundred forty-three thousand, twenty-one".