144120520 has 32 divisors (see below), whose sum is σ = 331816320. Its totient is φ = 56306880.

The previous prime is 144120511. The next prime is 144120521. The reversal of 144120520 is 25021441.

It is not an unprimeable number, because it can be changed into a prime (144120521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40176 + ... + 43615.

It is an arithmetic number, because the mean of its divisors is an integer number (10369260).

Almost surely, 2^144120520 is an apocalyptic number.

144120520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144120520 is an abundant number, since it is smaller than the sum of its proper divisors (187695800).

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

144120520 is a wasteful number, since it uses less digits than its factorization.

144120520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83845 (or 83841 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 144120520 is about 12005.0206163921. The cubic root of 144120520 is about 524.2944657293.

Adding to 144120520 its reverse (25021441), we get a palindrome (169141961).

The spelling of 144120520 in words is "one hundred forty-four million, one hundred twenty thousand, five hundred twenty".