144133321 has 4 divisors (see below), whose sum is σ = 144514000. Its totient is φ = 143752644.

The previous prime is 144133313. The next prime is 144133343. The reversal of 144133321 is 123331441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123331441 = 821 ⋅150221.

It is a cyclic number.

It is not a de Polignac number, because 144133321 - 2³ = 144133313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144133292 and 144133301.

It is not an unprimeable number, because it can be changed into a prime (144133391) 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 3 ways as a sum of consecutive naturals, for example, 189771 + ... + 190528.

It is an arithmetic number, because the mean of its divisors is an integer number (36128500).

Almost surely, 2^144133321 is an apocalyptic number.

It is an amenable number.

144133321 is a deficient number, since it is larger than the sum of its proper divisors (380679).

144133321 is an equidigital number, since it uses as much as digits as its factorization.

144133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380678.

The product of its digits is 864, while the sum is 22.

The square root of 144133321 is about 12005.5537564912. The cubic root of 144133321 is about 524.3099881424.

Adding to 144133321 its reverse (123331441), we get a palindrome (267464762).

The spelling of 144133321 in words is "one hundred forty-four million, one hundred thirty-three thousand, three hundred twenty-one".