144221045 has 16 divisors (see below), whose sum is σ = 174830400. Its totient is φ = 114207744.

The previous prime is 144221041. The next prime is 144221059. The reversal of 144221045 is 540122441.

It is a cyclic number.

It is not a de Polignac number, because 144221045 - 2² = 144221041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144221045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144221041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320981 + ... + 321429.

It is an arithmetic number, because the mean of its divisors is an integer number (10926900).

Almost surely, 2^144221045 is an apocalyptic number.

It is an amenable number.

144221045 is a deficient number, since it is larger than the sum of its proper divisors (30609355).

144221045 is a wasteful number, since it uses less digits than its factorization.

144221045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 144221045 is about 12009.2066765461. The cubic root of 144221045 is about 524.4163369982.

Adding to 144221045 its reverse (540122441), we get a palindrome (684343486).

The spelling of 144221045 in words is "one hundred forty-four million, two hundred twenty-one thousand, forty-five".