224061421 has 4 divisors (see below), whose sum is σ = 225023292. Its totient is φ = 223099552.

The previous prime is 224061419. The next prime is 224061437. The reversal of 224061421 is 124160422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91489225 + 132572196 = 9565^2 + 11514^2 .

It is a cyclic number.

It is not a de Polignac number, because 224061421 - 2¹ = 224061419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224061392 and 224061401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224061121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480586 + ... + 481051.

It is an arithmetic number, because the mean of its divisors is an integer number (56255823).

Almost surely, 2^224061421 is an apocalyptic number.

It is an amenable number.

224061421 is a deficient number, since it is larger than the sum of its proper divisors (961871).

224061421 is an equidigital number, since it uses as much as digits as its factorization.

224061421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961870.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 224061421 is about 14968.6813380471. The cubic root of 224061421 is about 607.3732983295.

Subtracting from 224061421 its reverse (124160422), we obtain a palindrome (99900999).

The spelling of 224061421 in words is "two hundred twenty-four million, sixty-one thousand, four hundred twenty-one".