144220234 has 4 divisors (see below), whose sum is σ = 216330354. Its totient is φ = 72110116.

The previous prime is 144220207. The next prime is 144220273. The reversal of 144220234 is 432022441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432022441 = 593 ⋅728537.

It can be written as a sum of positive squares in only one way, i.e., 144072009 + 148225 = 12003^2 + 385^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36055057 + ... + 36055060.

Almost surely, 2^144220234 is an apocalyptic number.

144220234 is a deficient number, since it is larger than the sum of its proper divisors (72110120).

144220234 is an equidigital number, since it uses as much as digits as its factorization.

144220234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72110119.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 144220234 is about 12009.1729107379. The cubic root of 144220234 is about 524.4153540107.

Adding to 144220234 its reverse (432022441), we get a palindrome (576242675).

The spelling of 144220234 in words is "one hundred forty-four million, two hundred twenty thousand, two hundred thirty-four".