4042781056 has 64 divisors (see below), whose sum is σ = 8280286560. Its totient is φ = 1964953600.

The previous prime is 4042781053. The next prime is 4042781059. The reversal of 4042781056 is 6501872404.

It is an interprime number because it is at equal distance from previous prime (4042781053) and next prime (4042781059).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042781053) by changing a digit.

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, 1630890 + ... + 1633366.

Almost surely, 2^4042781056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4042781056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4140143280).

4042781056 is an abundant number, since it is smaller than the sum of its proper divisors (4237505504).

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

4042781056 is a wasteful number, since it uses less digits than its factorization.

4042781056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843 (or 2831 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 4042781056 is about 63582.8676295746. The cubic root of 4042781056 is about 1593.0402198083.

The spelling of 4042781056 in words is "four billion, forty-two million, seven hundred eighty-one thousand, fifty-six".