144420424 has 8 divisors (see below), whose sum is σ = 270788310. Its totient is φ = 72210208.

The previous prime is 144420383. The next prime is 144420433. The reversal of 144420424 is 424024441.

144420424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 111724900 + 32695524 = 10570^2 + 5718^2 .

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

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9026269 + ... + 9026284.

Almost surely, 2^144420424 is an apocalyptic number.

It is an amenable number.

144420424 is a deficient number, since it is larger than the sum of its proper divisors (126367886).

144420424 is a wasteful number, since it uses less digits than its factorization.

144420424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18052559 (or 18052555 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 144420424 is about 12017.5048991045. The cubic root of 144420424 is about 524.6578862575.

Adding to 144420424 its reverse (424024441), we get a palindrome (568444865).

The spelling of 144420424 in words is "one hundred forty-four million, four hundred twenty thousand, four hundred twenty-four".