144140617 has 8 divisors (see below), whose sum is σ = 146935880. Its totient is φ = 141367680.

The previous prime is 144140597. The next prime is 144140627. The reversal of 144140617 is 716041441.

It can be written as a sum of positive squares in 4 ways, for example, as 404496 + 143736121 = 636^2 + 11989^2 .

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 144140617 - 2¹⁵ = 144107849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144140627) 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, 7759 + ... + 18667.

It is an arithmetic number, because the mean of its divisors is an integer number (18366985).

Almost surely, 2^144140617 is an apocalyptic number.

It is an amenable number.

144140617 is a deficient number, since it is larger than the sum of its proper divisors (2795263).

144140617 is a wasteful number, since it uses less digits than its factorization.

144140617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11163.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 144140617 is about 12005.8576120159. The cubic root of 144140617 is about 524.3188348155.

The spelling of 144140617 in words is "one hundred forty-four million, one hundred forty thousand, six hundred seventeen".