144091321 has 4 divisors (see below), whose sum is σ = 157190544. Its totient is φ = 130992100.

The previous prime is 144091313. The next prime is 144091349. The reversal of 144091321 is 123190441.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 144091321 - 2³ = 144091313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144091361) 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, 6549595 + ... + 6549616.

It is an arithmetic number, because the mean of its divisors is an integer number (39297636).

Almost surely, 2^144091321 is an apocalyptic number.

144091321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144091321 is a deficient number, since it is larger than the sum of its proper divisors (13099223).

144091321 is a wasteful number, since it uses less digits than its factorization.

144091321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13099222.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 144091321 is about 12003.8044385936. The cubic root of 144091321 is about 524.2590557634.

The spelling of 144091321 in words is "one hundred forty-four million, ninety-one thousand, three hundred twenty-one".