2237421 has 16 divisors (see below), whose sum is σ = 3326400. Its totient is φ = 1329408.

The previous prime is 2237413. The next prime is 2237429. The reversal of 2237421 is 1247322.

2237421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2237413) and next prime (2237429).

It is not a de Polignac number, because 2237421 - 2³ = 2237413 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 2¹⁷ + 3⁷ + 7⁴ + 4⁶ + 2²¹ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2237429) 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, 186 + ... + 2123.

It is an arithmetic number, because the mean of its divisors is an integer number (207900).

2^2237421 is an apocalyptic number.

It is an amenable number.

2237421 is a deficient number, since it is larger than the sum of its proper divisors (1088979).

2237421 is a wasteful number, since it uses less digits than its factorization.

2237421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348.

The product of its digits is 672, while the sum is 21.

The square root of 2237421 is about 1495.8011231444. The cubic root of 2237421 is about 130.7924183618.

Subtracting from 2237421 its reverse (1247322), we obtain a palindrome (990099).

The spelling of 2237421 in words is "two million, two hundred thirty-seven thousand, four hundred twenty-one".