224342421 has 32 divisors (see below), whose sum is σ = 325928448. Its totient is φ = 136719360.

The previous prime is 224342411. The next prime is 224342429. The reversal of 224342421 is 124243422.

It is not a de Polignac number, because 224342421 - 2⁶ = 224342357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224342391 and 224342400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224342429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414411 + ... + 414951.

It is an arithmetic number, because the mean of its divisors is an integer number (10185264).

Almost surely, 2^224342421 is an apocalyptic number.

It is an amenable number.

224342421 is a deficient number, since it is larger than the sum of its proper divisors (101586027).

224342421 is a wasteful number, since it uses less digits than its factorization.

224342421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781.

The product of its digits is 3072, while the sum is 24.

The square root of 224342421 is about 14978.0646613640. The cubic root of 224342421 is about 607.6270986759.

Adding to 224342421 its reverse (124243422), we get a palindrome (348585843).

The spelling of 224342421 in words is "two hundred twenty-four million, three hundred forty-two thousand, four hundred twenty-one".