42856128395 has 16 divisors (see below), whose sum is σ = 54139428000. Its totient is φ = 32477211648.

The previous prime is 42856128391. The next prime is 42856128397. The reversal of 42856128395 is 59382165824.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42856128395 - 2² = 42856128391 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1441541 + ... + 1470969.

It is an arithmetic number, because the mean of its divisors is an integer number (3383714250).

Almost surely, 2^42856128395 is an apocalyptic number.

42856128395 is a deficient number, since it is larger than the sum of its proper divisors (11283299605).

42856128395 is a wasteful number, since it uses less digits than its factorization.

42856128395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44782.

The product of its digits is 4147200, while the sum is 53.

The spelling of 42856128395 in words is "forty-two billion, eight hundred fifty-six million, one hundred twenty-eight thousand, three hundred ninety-five".