214042321 has 4 divisors (see below), whose sum is σ = 220946944. Its totient is φ = 207137700.

The previous prime is 214042307. The next prime is 214042327. The reversal of 214042321 is 123240412.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214042321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214042327) 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, 3452265 + ... + 3452326.

It is an arithmetic number, because the mean of its divisors is an integer number (55236736).

Almost surely, 2^214042321 is an apocalyptic number.

It is an amenable number.

214042321 is a deficient number, since it is larger than the sum of its proper divisors (6904623).

214042321 is an equidigital number, since it uses as much as digits as its factorization.

214042321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6904622.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 214042321 is about 14630.1852688201. The cubic root of 214042321 is about 598.1818302557.

Adding to 214042321 its reverse (123240412), we get a palindrome (337282733).

The spelling of 214042321 in words is "two hundred fourteen million, forty-two thousand, three hundred twenty-one".