144820017 has 12 divisors (see below), whose sum is σ = 209297920. Its totient is φ = 96494328.

The previous prime is 144819989. The next prime is 144820037. The reversal of 144820017 is 710028441.

144820017 is a `hidden beast` number, since 1 + 448 + 200 + 17 = 666.

It is not a de Polignac number, because 144820017 - 2⁶ = 144819953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144820037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20784 + ... + 26862.

Almost surely, 2^144820017 is an apocalyptic number.

It is an amenable number.

144820017 is a deficient number, since it is larger than the sum of its proper divisors (64477903).

144820017 is a wasteful number, since it uses less digits than its factorization.

144820017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8732 (or 8729 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 144820017 is about 12034.1188709436. The cubic root of 144820017 is about 525.1413279381.

Adding to 144820017 its reverse (710028441), we get a palindrome (854848458).

The spelling of 144820017 in words is "one hundred forty-four million, eight hundred twenty thousand, seventeen".