144721727 has 8 divisors (see below), whose sum is σ = 158962560. Its totient is φ = 131143320.

The previous prime is 144721721. The next prime is 144721729. The reversal of 144721727 is 727127441.

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

It is not a de Polignac number, because 144721727 - 2⁴ = 144721711 is a prime.

It is a Duffinian number.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144721721) 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 7 ways as a sum of consecutive naturals, for example, 165149 + ... + 166022.

It is an arithmetic number, because the mean of its divisors is an integer number (19870320).

Almost surely, 2^144721727 is an apocalyptic number.

144721727 is a deficient number, since it is larger than the sum of its proper divisors (14240833).

144721727 is a wasteful number, since it uses less digits than its factorization.

144721727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331213.

The product of its digits is 21952, while the sum is 35.

The square root of 144721727 is about 12030.0343723532. The cubic root of 144721727 is about 525.0224957859.

The spelling of 144721727 in words is "one hundred forty-four million, seven hundred twenty-one thousand, seven hundred twenty-seven".