144223401 has 24 divisors (see below), whose sum is σ = 224616640. Its totient is φ = 80633952.

The previous prime is 144223367. The next prime is 144223403. The reversal of 144223401 is 104322441.

It is not a de Polignac number, because 144223401 - 2⁷ = 144223273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144223403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44835 + ... + 47943.

Almost surely, 2^144223401 is an apocalyptic number.

It is an amenable number.

144223401 is a deficient number, since it is larger than the sum of its proper divisors (80393239).

144223401 is an equidigital number, since it uses as much as digits as its factorization.

144223401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213 (or 3166 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 144223401 is about 12009.3047675542. The cubic root of 144223401 is about 524.4191926105.

Adding to 144223401 its reverse (104322441), we get a palindrome (248545842).

The spelling of 144223401 in words is "one hundred forty-four million, two hundred twenty-three thousand, four hundred one".