144023155 has 4 divisors (see below), whose sum is σ = 172827792. Its totient is φ = 115218520.

The previous prime is 144023153. The next prime is 144023183. The reversal of 144023155 is 551320441.

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: 551320441 = 7 ⋅78760063.

It is not a de Polignac number, because 144023155 - 2¹ = 144023153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144023153) 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, 14402311 + ... + 14402320.

It is an arithmetic number, because the mean of its divisors is an integer number (43206948).

Almost surely, 2^144023155 is an apocalyptic number.

144023155 is a deficient number, since it is larger than the sum of its proper divisors (28804637).

144023155 is an equidigital number, since it uses as much as digits as its factorization.

144023155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28804636.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 144023155 is about 12000.9647528855. The cubic root of 144023155 is about 524.1763714412.

Adding to 144023155 its reverse (551320441), we get a palindrome (695343596).

The spelling of 144023155 in words is "one hundred forty-four million, twenty-three thousand, one hundred fifty-five".