2021494 has 4 divisors (see below), whose sum is σ = 3032244. Its totient is φ = 1010746.

The previous prime is 2021489. The next prime is 2021497. The reversal of 2021494 is 4941202.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021497) 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 as a sum of consecutive naturals, namely, 505372 + ... + 505375.

It is an arithmetic number, because the mean of its divisors is an integer number (758061).

2^2021494 is an apocalyptic number.

2021494 is a deficient number, since it is larger than the sum of its proper divisors (1010750).

2021494 is a wasteful number, since it uses less digits than its factorization.

2021494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010749.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2021494 is about 1421.7925305754. The cubic root of 2021494 is about 126.4418434211.

Adding to 2021494 its reverse (4941202), we get a palindrome (6962696).

The spelling of 2021494 in words is "two million, twenty-one thousand, four hundred ninety-four".