42856128396 has 36 divisors (see below), whose sum is σ = 109814758872. Its totient is φ = 14089685184.

The previous prime is 42856128391. The next prime is 42856128397. The reversal of 42856128396 is 69382165824.

42856128396 is a `hidden beast` number, since 4 + 28 + 561 + 28 + 39 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (42856128391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8151126 + ... + 8156381.

Almost surely, 2^42856128396 is an apocalyptic number.

It is an amenable number.

42856128396 is an abundant number, since it is smaller than the sum of its proper divisors (66958630476).

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

42856128396 is a wasteful number, since it uses less digits than its factorization.

42856128396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16307590 (or 16307585 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 42856128396 in words is "forty-two billion, eight hundred fifty-six million, one hundred twenty-eight thousand, three hundred ninety-six".