144721120 has 48 divisors (see below), whose sum is σ = 345779280. Its totient is φ = 57232384.

The previous prime is 144721099. The next prime is 144721123. The reversal of 144721120 is 21127441.

It is a junction number, because it is equal to n+sod(n) for n = 144721091 and 144721100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144721123) 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, 9159 + ... + 19321.

It is an arithmetic number, because the mean of its divisors is an integer number (7203735).

Almost surely, 2^144721120 is an apocalyptic number.

144721120 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 144721120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172889640).

144721120 is an abundant number, since it is smaller than the sum of its proper divisors (201058160).

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

144721120 is a wasteful number, since it uses less digits than its factorization.

144721120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10267 (or 10259 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 144721120 is about 12030.0091438037. The cubic root of 144721120 is about 525.0217617586.

Adding to 144721120 its reverse (21127441), we get a palindrome (165848561).

The spelling of 144721120 in words is "one hundred forty-four million, seven hundred twenty-one thousand, one hundred twenty".