4042121220244 has 24 divisors (see below), whose sum is σ = 7079472011808. Its totient is φ = 2019415523040.

The previous prime is 4042121220229. The next prime is 4042121220257. The reversal of 4042121220244 is 4420221212404.

It is a happy number.

It is a congruent 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 in 7 ways as a sum of consecutive naturals, for example, 28347094 + ... + 28489330.

It is an arithmetic number, because the mean of its divisors is an integer number (294978000492).

Almost surely, 2^{4042121220244} is an apocalyptic number.

It is an amenable number.

4042121220244 is a deficient number, since it is larger than the sum of its proper divisors (3037350791564).

4042121220244 is a wasteful number, since it uses less digits than its factorization.

4042121220244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147975 (or 147973 counting only the distinct ones).

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

Adding to 4042121220244 its reverse (4420221212404), we get a palindrome (8462342432648).

The spelling of 4042121220244 in words is "four trillion, forty-two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred forty-four".