144166321 has 8 divisors (see below), whose sum is σ = 155361024. Its totient is φ = 132986640.

The previous prime is 144166303. The next prime is 144166331. The reversal of 144166321 is 123661441.

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

It is a cyclic number.

It is not a de Polignac number, because 144166321 - 2⁹ = 144165809 is a prime.

It is a super-2 number, since 2×144166321² = 41567856221350082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144166321.

It is not an unprimeable number, because it can be changed into a prime (144166301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23616 + ... + 29086.

It is an arithmetic number, because the mean of its divisors is an integer number (19420128).

Almost surely, 2^144166321 is an apocalyptic number.

It is an amenable number.

144166321 is a deficient number, since it is larger than the sum of its proper divisors (11194703).

144166321 is a wasteful number, since it uses less digits than its factorization.

144166321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7511.

The product of its digits is 3456, while the sum is 28.

The square root of 144166321 is about 12006.9280417599. The cubic root of 144166321 is about 524.3499994994.

The spelling of 144166321 in words is "one hundred forty-four million, one hundred sixty-six thousand, three hundred twenty-one".