214421 has 4 divisors (see below), whose sum is σ = 227052. Its totient is φ = 201792.

The previous prime is 214399. The next prime is 214433. The reversal of 214421 is 124412.

214421 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.

It can be written as a sum of positive squares in 2 ways, for example, as 130321 + 84100 = 361^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 214421 - 2¹⁰ = 213397 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 214396 and 214405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214451) 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, 6290 + ... + 6323.

It is an arithmetic number, because the mean of its divisors is an integer number (56763).

2²¹⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

214421 is a deficient number, since it is larger than the sum of its proper divisors (12631).

214421 is a wasteful number, since it uses less digits than its factorization.

214421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12630.

The product of its digits is 64, while the sum is 14.

The square root of 214421 is about 463.0561521025. The cubic root of 214421 is about 59.8534385836.

Adding to 214421 its reverse (124412), we get a palindrome (338833).

Subtracting from 214421 its reverse (124412), we obtain a palindrome (90009).

The spelling of 214421 in words is "two hundred fourteen thousand, four hundred twenty-one", and thus it is an iban number.