2268421 has 4 divisors (see below), whose sum is σ = 2367072. Its totient is φ = 2169772.

The previous prime is 2268403. The next prime is 2268437. The reversal of 2268421 is 1248622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1248622 = 2 ⋅624311.

It is a cyclic number.

It is not a de Polignac number, because 2268421 - 2⁵ = 2268389 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 (2268451) 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, 49291 + ... + 49336.

It is an arithmetic number, because the mean of its divisors is an integer number (591768).

2^2268421 is an apocalyptic number.

It is an amenable number.

2268421 is a deficient number, since it is larger than the sum of its proper divisors (98651).

2268421 is an equidigital number, since it uses as much as digits as its factorization.

2268421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98650.

The product of its digits is 1536, while the sum is 25.

The square root of 2268421 is about 1506.1278166212. The cubic root of 2268421 is about 131.3937032243.

The spelling of 2268421 in words is "two million, two hundred sixty-eight thousand, four hundred twenty-one".