144272509 has 16 divisors (see below), whose sum is σ = 151683840. Its totient is φ = 137090880.

The previous prime is 144272483. The next prime is 144272533. The reversal of 144272509 is 905272441.

It is a cyclic number.

It is not a de Polignac number, because 144272509 - 2¹⁹ = 143748221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144272539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334524 + ... + 334954.

It is an arithmetic number, because the mean of its divisors is an integer number (9480240).

Almost surely, 2^144272509 is an apocalyptic number.

It is an amenable number.

144272509 is a deficient number, since it is larger than the sum of its proper divisors (7411331).

144272509 is a wasteful number, since it uses less digits than its factorization.

144272509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 144272509 is about 12011.3491748429. The cubic root of 144272509 is about 524.4787073520.

The spelling of 144272509 in words is "one hundred forty-four million, two hundred seventy-two thousand, five hundred nine".