144444142 has 4 divisors (see below), whose sum is σ = 216666216. Its totient is φ = 72222070.

The previous prime is 144444109. The next prime is 144444149. The reversal of 144444142 is 241444441.

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

It is a super-2 number, since 2×144444142² = 41728220316232328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144444142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144444149) by changing a digit.

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, 36111034 + ... + 36111037.

It is an arithmetic number, because the mean of its divisors is an integer number (54166554).

Almost surely, 2^144444142 is an apocalyptic number.

144444142 is a deficient number, since it is larger than the sum of its proper divisors (72222074).

144444142 is an equidigital number, since it uses as much as digits as its factorization.

144444142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72222073.

The product of its digits is 8192, while the sum is 28.

The square root of 144444142 is about 12018.4916690906. The cubic root of 144444142 is about 524.6866060056.

Adding to 144444142 its reverse (241444441), we get a palindrome (385888583).

The spelling of 144444142 in words is "one hundred forty-four million, four hundred forty-four thousand, one hundred forty-two".