144441021 has 8 divisors (see below), whose sum is σ = 202724320. Its totient is φ = 91225872.

The previous prime is 144441019. The next prime is 144441041. The reversal of 144441021 is 120144441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144441021 - 2¹ = 144441019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144441041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266970 + ... + 1267083.

It is an arithmetic number, because the mean of its divisors is an integer number (25340540).

Almost surely, 2^144441021 is an apocalyptic number.

It is an amenable number.

144441021 is a deficient number, since it is larger than the sum of its proper divisors (58283299).

144441021 is a wasteful number, since it uses less digits than its factorization.

144441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534075.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 144441021 is about 12018.3618268048. The cubic root of 144441021 is about 524.6828270161.

Adding to 144441021 its reverse (120144441), we get a palindrome (264585462).

The spelling of 144441021 in words is "one hundred forty-four million, four hundred forty-one thousand, twenty-one".