214243421 has 8 divisors (see below), whose sum is σ = 248504640. Its totient is φ = 180895968.

The previous prime is 214243361. The next prime is 214243429. The reversal of 214243421 is 124342412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 214243421 - 2¹⁰ = 214242397 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 (214243429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227936 + ... + 228873.

It is an arithmetic number, because the mean of its divisors is an integer number (31063080).

Almost surely, 2^214243421 is an apocalyptic number.

It is an amenable number.

214243421 is a deficient number, since it is larger than the sum of its proper divisors (34261219).

214243421 is an equidigital number, since it uses as much as digits as its factorization.

214243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456883.

The product of its digits is 1536, while the sum is 23.

The square root of 214243421 is about 14637.0564322202. The cubic root of 214243421 is about 598.3691089702.

Adding to 214243421 its reverse (124342412), we get a palindrome (338585833).

The spelling of 214243421 in words is "two hundred fourteen million, two hundred forty-three thousand, four hundred twenty-one".