144221443 has 8 divisors (see below), whose sum is σ = 146341440. Its totient is φ = 142114560.

The previous prime is 144221423. The next prime is 144221447. The reversal of 144221443 is 344122441.

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

It is a cyclic number.

It is not a de Polignac number, because 144221443 - 2¹⁷ = 144090371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144221447) 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, 20073 + ... + 26293.

It is an arithmetic number, because the mean of its divisors is an integer number (18292680).

Almost surely, 2^144221443 is an apocalyptic number.

144221443 is a deficient number, since it is larger than the sum of its proper divisors (2119997).

144221443 is an equidigital number, since it uses as much as digits as its factorization.

144221443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6557.

The product of its digits is 3072, while the sum is 25.

The square root of 144221443 is about 12009.2232471547. The cubic root of 144221443 is about 524.4168194001.

Adding to 144221443 its reverse (344122441), we get a palindrome (488343884).

The spelling of 144221443 in words is "one hundred forty-four million, two hundred twenty-one thousand, four hundred forty-three".