424144221 has 8 divisors (see below), whose sum is σ = 579319104. Its totient is φ = 275866080.

The previous prime is 424144207. The next prime is 424144229. The reversal of 424144221 is 122441424.

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

It is not a de Polignac number, because 424144221 - 2⁶ = 424144157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 424144191 and 424144200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424144229) 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, 1724041 + ... + 1724286.

It is an arithmetic number, because the mean of its divisors is an integer number (72414888).

Almost surely, 2^424144221 is an apocalyptic number.

424144221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

424144221 is a deficient number, since it is larger than the sum of its proper divisors (155174883).

424144221 is a wasteful number, since it uses less digits than its factorization.

424144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448371.

The product of its digits is 2048, while the sum is 24.

The square root of 424144221 is about 20594.7619796879. The cubic root of 424144221 is about 751.3423196928.

Adding to 424144221 its reverse (122441424), we get a palindrome (546585645).

The spelling of 424144221 in words is "four hundred twenty-four million, one hundred forty-four thousand, two hundred twenty-one".