144165321 has 12 divisors (see below), whose sum is σ = 220488372. Its totient is φ = 90456576.

The previous prime is 144165319. The next prime is 144165361. The reversal of 144165321 is 123561441.

It is a happy number.

144165321 is a `hidden beast` number, since 1 + 4 + 4 + 1 + 653 + 2 + 1 = 666.

144165321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 88454025 + 55711296 = 9405^2 + 7464^2 .

It is not a de Polignac number, because 144165321 - 2¹ = 144165319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144165361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470976 + ... + 471281.

It is an arithmetic number, because the mean of its divisors is an integer number (18374031).

Almost surely, 2^144165321 is an apocalyptic number.

It is an amenable number.

144165321 is a deficient number, since it is larger than the sum of its proper divisors (76323051).

144165321 is a wasteful number, since it uses less digits than its factorization.

144165321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942280 (or 942277 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 144165321 is about 12006.8863990628. The cubic root of 144165321 is about 524.3487871238.

The spelling of 144165321 in words is "one hundred forty-four million, one hundred sixty-five thousand, three hundred twenty-one".