144168424 has 8 divisors (see below), whose sum is σ = 270315810. Its totient is φ = 72084208.

The previous prime is 144168397. The next prime is 144168433. The reversal of 144168424 is 424861441.

It can be written as a sum of positive squares in only one way, i.e., 107952100 + 36216324 = 10390^2 + 6018^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 144168424.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9010519 + ... + 9010534.

Almost surely, 2^144168424 is an apocalyptic number.

It is an amenable number.

144168424 is a deficient number, since it is larger than the sum of its proper divisors (126147386).

144168424 is a wasteful number, since it uses less digits than its factorization.

144168424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18021059 (or 18021055 counting only the distinct ones).

The product of its digits is 24576, while the sum is 34.

The square root of 144168424 is about 12007.0156158806. The cubic root of 144168424 is about 524.3525491071.

The spelling of 144168424 in words is "one hundred forty-four million, one hundred sixty-eight thousand, four hundred twenty-four".