214232421 has 16 divisors (see below), whose sum is σ = 315120960. Its totient is φ = 128618880.

The previous prime is 214232411. The next prime is 214232423. The reversal of 214232421 is 124232412.

It is not a de Polignac number, because 214232421 - 2¹⁰ = 214231397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214232423) 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, 65391 + ... + 68588.

It is an arithmetic number, because the mean of its divisors is an integer number (19695060).

Almost surely, 2^214232421 is an apocalyptic number.

It is an amenable number.

214232421 is a deficient number, since it is larger than the sum of its proper divisors (100888539).

214232421 is a wasteful number, since it uses less digits than its factorization.

214232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134036.

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

The square root of 214232421 is about 14636.6806687855. The cubic root of 214232421 is about 598.3588680135.

Adding to 214232421 its reverse (124232412), we get a palindrome (338464833).

Subtracting from 214232421 its reverse (124232412), we obtain a palindrome (90000009).

The spelling of 214232421 in words is "two hundred fourteen million, two hundred thirty-two thousand, four hundred twenty-one".