224132421 has 8 divisors (see below), whose sum is σ = 306920224. Its totient is φ = 145383120.

The previous prime is 224132339. The next prime is 224132431. The reversal of 224132421 is 124231422.

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

It is not a de Polignac number, because 224132421 - 2¹¹ = 224130373 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 (224132431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009495 + ... + 1009716.

It is an arithmetic number, because the mean of its divisors is an integer number (38365028).

Almost surely, 2^224132421 is an apocalyptic number.

It is an amenable number.

224132421 is a deficient number, since it is larger than the sum of its proper divisors (82787803).

224132421 is a wasteful number, since it uses less digits than its factorization.

224132421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019251.

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

The square root of 224132421 is about 14971.0527685931. The cubic root of 224132421 is about 607.4374458444.

Adding to 224132421 its reverse (124231422), we get a palindrome (348363843).

Subtracting from 224132421 its reverse (124231422), we obtain a palindrome (99900999).

The spelling of 224132421 in words is "two hundred twenty-four million, one hundred thirty-two thousand, four hundred twenty-one".