142121111144444 has 48 divisors (see below), whose sum is σ = 255596971271040. Its totient is φ = 69095865484800.

The previous prime is 142121111144399. The next prime is 142121111144483. The reversal of 142121111144444 is 444441111121241.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3399924344 + ... + 3399966144.

It is an arithmetic number, because the mean of its divisors is an integer number (5324936901480).

Almost surely, 2^{142121111144444} is an apocalyptic number.

It is an amenable number.

142121111144444 is a deficient number, since it is larger than the sum of its proper divisors (113475860126596).

142121111144444 is a wasteful number, since it uses less digits than its factorization.

142121111144444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55958 (or 55956 counting only the distinct ones).

The product of its digits is 16384, while the sum is 35.

Adding to 142121111144444 its reverse (444441111121241), we get a palindrome (586562222265685).

The spelling of 142121111144444 in words is "one hundred forty-two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred forty-four thousand, four hundred forty-four".