144151321 has 4 divisors (see below), whose sum is σ = 144269092. Its totient is φ = 144033552.

The previous prime is 144151307. The next prime is 144151339. The reversal of 144151321 is 123151441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104775696 + 39375625 = 10236^2 + 6275^2 .

It is a cyclic number.

It is not a de Polignac number, because 144151321 - 2⁵ = 144151289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144151292 and 144151301.

It is not an unprimeable number, because it can be changed into a prime (144151621) 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, 57030 + ... + 59503.

It is an arithmetic number, because the mean of its divisors is an integer number (36067273).

Almost surely, 2^144151321 is an apocalyptic number.

It is an amenable number.

144151321 is a deficient number, since it is larger than the sum of its proper divisors (117771).

144151321 is a wasteful number, since it uses less digits than its factorization.

144151321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117770.

The product of its digits is 480, while the sum is 22.

The square root of 144151321 is about 12006.3033861385. The cubic root of 144151321 is about 524.3318132760.

It can be divided in two parts, 144 and 151321, that multiplied together give a square (21790224 = 4668²).

The spelling of 144151321 in words is "one hundred forty-four million, one hundred fifty-one thousand, three hundred twenty-one".