143221520144 has 40 divisors (see below), whose sum is σ = 279432691800. Its totient is φ = 71110130688.

The previous prime is 143221520137. The next prime is 143221520257. The reversal of 143221520144 is 441025122341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67398390544 + 75823129600 = 259612^2 + 275360^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12097652 + ... + 12109484.

It is an arithmetic number, because the mean of its divisors is an integer number (6985817295).

Almost surely, 2^143221520144 is an apocalyptic number.

It is an amenable number.

143221520144 is a deficient number, since it is larger than the sum of its proper divisors (136211171656).

143221520144 is a wasteful number, since it uses less digits than its factorization.

143221520144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17067 (or 17061 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 143221520144 its reverse (441025122341), we get a palindrome (584246642485).

The spelling of 143221520144 in words is "one hundred forty-three billion, two hundred twenty-one million, five hundred twenty thousand, one hundred forty-four".