144173745 has 12 divisors (see below), whose sum is σ = 249901236. Its totient is φ = 76892640.

The previous prime is 144173723. The next prime is 144173779. The reversal of 144173745 is 547371441.

It can be written as a sum of positive squares in 2 ways, for example, as 18352656 + 125821089 = 4284^2 + 11217^2 .

It is not a de Polignac number, because 144173745 - 2⁵ = 144173713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1601886 + ... + 1601975.

It is an arithmetic number, because the mean of its divisors is an integer number (20825103).

Almost surely, 2^144173745 is an apocalyptic number.

144173745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144173745 is a deficient number, since it is larger than the sum of its proper divisors (105727491).

144173745 is a wasteful number, since it uses less digits than its factorization.

144173745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203872 (or 3203869 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 144173745 is about 12007.2371926268. The cubic root of 144173745 is about 524.3590000010.

It can be divided in two parts, 144 and 173745, that added together give a square (173889 = 417²).

The spelling of 144173745 in words is "one hundred forty-four million, one hundred seventy-three thousand, seven hundred forty-five".