144442142122 has 4 divisors (see below), whose sum is σ = 216663213186. Its totient is φ = 72221071060.

The previous prime is 144442142111. The next prime is 144442142189. The reversal of 144442142122 is 221241244441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 131023004841 + 13419137281 = 361971^2 + 115841^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 36110535529 + ... + 36110535532.

Almost surely, 2^144442142122 is an apocalyptic number.

144442142122 is a deficient number, since it is larger than the sum of its proper divisors (72221071064).

144442142122 is an equidigital number, since it uses as much as digits as its factorization.

144442142122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72221071063.

The product of its digits is 16384, while the sum is 31.

Adding to 144442142122 its reverse (221241244441), we get a palindrome (365683386563).

The spelling of 144442142122 in words is "one hundred forty-four billion, four hundred forty-two million, one hundred forty-two thousand, one hundred twenty-two".