2235421 has 4 divisors (see below), whose sum is σ = 2239132. Its totient is φ = 2231712.

The previous prime is 2235403. The next prime is 2235427. The reversal of 2235421 is 1245322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1612900 + 622521 = 1270^2 + 789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2235421 - 2¹¹ = 2233373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2235427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720 + ... + 2233.

It is an arithmetic number, because the mean of its divisors is an integer number (559783).

2^2235421 is an apocalyptic number.

It is an amenable number.

2235421 is a deficient number, since it is larger than the sum of its proper divisors (3711).

2235421 is an equidigital number, since it uses as much as digits as its factorization.

2235421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710.

The product of its digits is 480, while the sum is 19.

The square root of 2235421 is about 1495.1324356056. The cubic root of 2235421 is about 130.7534355601.

Subtracting from 2235421 its reverse (1245322), we obtain a palindrome (990099).

The spelling of 2235421 in words is "two million, two hundred thirty-five thousand, four hundred twenty-one".