4042021252444 has 12 divisors (see below), whose sum is σ = 8084042504944. Its totient is φ = 1732294822464.

The previous prime is 4042021252429. The next prime is 4042021252453. The reversal of 4042021252444 is 4442521202404.

4042021252444 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72178950909 + ... + 72178950964.

Almost surely, 2^{4042021252444} is an apocalyptic number.

It is an amenable number.

4042021252444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4042021252444 is a wasteful number, since it uses less digits than its factorization.

4042021252444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144357901884 (or 144357901882 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 34.

Adding to 4042021252444 its reverse (4442521202404), we get a palindrome (8484542454848).

The spelling of 4042021252444 in words is "four trillion, forty-two billion, twenty-one million, two hundred fifty-two thousand, four hundred forty-four".