144423520 has 48 divisors (see below), whose sum is σ = 343154448. Its totient is φ = 57438720.

The previous prime is 144423493. The next prime is 144423523. The reversal of 144423520 is 25324441.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144423523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26467 + ... + 31453.

It is an arithmetic number, because the mean of its divisors is an integer number (7149051).

Almost surely, 2^144423520 is an apocalyptic number.

144423520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144423520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171577224).

144423520 is an abundant number, since it is smaller than the sum of its proper divisors (198730928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144423520 is a wasteful number, since it uses less digits than its factorization.

144423520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183 (or 5175 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 144423520 is about 12017.6337105106. The cubic root of 144423520 is about 524.6616353330.

Adding to 144423520 its reverse (25324441), we get a palindrome (169747961).

It can be divided in two parts, 1444 and 23520, that added together give a square (24964 = 158²).

The spelling of 144423520 in words is "one hundred forty-four million, four hundred twenty-three thousand, five hundred twenty".