1424144221 has 4 divisors (see below), whose sum is σ = 1499099200. Its totient is φ = 1349189244.

The previous prime is 1424144207. The next prime is 1424144243. The reversal of 1424144221 is 1224414241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1224414241 = 71 ⋅17245271.

It is a cyclic number.

It is not a de Polignac number, because 1424144221 - 2²³ = 1415755613 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 (1424144251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37477461 + ... + 37477498.

It is an arithmetic number, because the mean of its divisors is an integer number (374774800).

Almost surely, 2^1424144221 is an apocalyptic number.

It is an amenable number.

1424144221 is a deficient number, since it is larger than the sum of its proper divisors (74954979).

1424144221 is an equidigital number, since it uses as much as digits as its factorization.

1424144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74954978.

The product of its digits is 2048, while the sum is 25.

The square root of 1424144221 is about 37737.8354042730. The cubic root of 1424144221 is about 1125.0832454614.

Adding to 1424144221 its reverse (1224414241), we get a palindrome (2648558462).

The spelling of 1424144221 in words is "one billion, four hundred twenty-four million, one hundred forty-four thousand, two hundred twenty-one".