2021426 has 12 divisors (see below), whose sum is σ = 3333246. Its totient is φ = 918720.

The previous prime is 2021381. The next prime is 2021431. The reversal of 2021426 is 6241202.

It can be written as a sum of positive squares in only one way, i.e., 1600225 + 421201 = 1265^2 + 649^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3935 + ... + 4418.

2^2021426 is an apocalyptic number.

2021426 is a deficient number, since it is larger than the sum of its proper divisors (1311820).

2021426 is a wasteful number, since it uses less digits than its factorization.

2021426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8377 (or 8366 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2021426 is about 1421.7686168994. The cubic root of 2021426 is about 126.4404256344.

Adding to 2021426 its reverse (6241202), we get a palindrome (8262628).

The spelling of 2021426 in words is "two million, twenty-one thousand, four hundred twenty-six".