144421408 has 24 divisors (see below), whose sum is σ = 284630220. Its totient is φ = 72134400.

The previous prime is 144421357. The next prime is 144421441. The reversal of 144421408 is 804124441.

It can be written as a sum of positive squares in 2 ways, for example, as 87086224 + 57335184 = 9332^2 + 7572^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39898 + ... + 43366.

Almost surely, 2^144421408 is an apocalyptic number.

It is an amenable number.

144421408 is a deficient number, since it is larger than the sum of its proper divisors (140208812).

144421408 is a wasteful number, since it uses less digits than its factorization.

144421408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4780 (or 4772 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 144421408 is about 12017.5458393134. The cubic root of 144421408 is about 524.6590778300.

Adding to 144421408 its reverse (804124441), we get a palindrome (948545849).

The spelling of 144421408 in words is "one hundred forty-four million, four hundred twenty-one thousand, four hundred eight".