2174421 has 4 divisors (see below), whose sum is σ = 2899232. Its totient is φ = 1449612.

The previous prime is 2174407. The next prime is 2174423. The reversal of 2174421 is 1244712.

It is a happy number.

2174421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 2174421 - 2¹⁵ = 2141653 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2174423) 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 3 ways as a sum of consecutive naturals, for example, 362401 + ... + 362406.

It is an arithmetic number, because the mean of its divisors is an integer number (724808).

2^2174421 is an apocalyptic number.

It is an amenable number.

2174421 is a deficient number, since it is larger than the sum of its proper divisors (724811).

2174421 is an equidigital number, since it uses as much as digits as its factorization.

2174421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724810.

The product of its digits is 448, while the sum is 21.

The square root of 2174421 is about 1474.5918079252. The cubic root of 2174421 is about 129.5531204283.

The spelling of 2174421 in words is "two million, one hundred seventy-four thousand, four hundred twenty-one".