214304421 has 16 divisors (see below), whose sum is σ = 290269440. Its totient is φ = 140613120.

The previous prime is 214304399. The next prime is 214304437. The reversal of 214304421 is 124403412.

It is not a de Polignac number, because 214304421 - 2¹⁴ = 214288037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214304491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156781 + ... + 158141.

It is an arithmetic number, because the mean of its divisors is an integer number (18141840).

Almost surely, 2^214304421 is an apocalyptic number.

It is an amenable number.

214304421 is a deficient number, since it is larger than the sum of its proper divisors (75965019).

214304421 is a wasteful number, since it uses less digits than its factorization.

214304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 214304421 is about 14639.1400362180. The cubic root of 214304421 is about 598.4258933697.

Adding to 214304421 its reverse (124403412), we get a palindrome (338707833).

The spelling of 214304421 in words is "two hundred fourteen million, three hundred four thousand, four hundred twenty-one".