144440120 has 64 divisors (see below), whose sum is σ = 357596640. Its totient is φ = 52504320.

The previous prime is 144440111. The next prime is 144440159. The reversal of 144440120 is 21044441.

It is a happy number.

It is a super-2 number, since 2×144440120² = 41725896531228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 144440092 and 144440101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51884 + ... + 54596.

Almost surely, 2^144440120 is an apocalyptic number.

144440120 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 144440120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178798320).

144440120 is an abundant number, since it is smaller than the sum of its proper divisors (213156520).

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

144440120 is a wasteful number, since it uses less digits than its factorization.

144440120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757 (or 2731 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 144440120 is about 12018.3243424364. The cubic root of 144440120 is about 524.6817360513.

Adding to 144440120 its reverse (21044441), we get a palindrome (165484561).

The spelling of 144440120 in words is "one hundred forty-four million, four hundred forty thousand, one hundred twenty".