42942056599656 has 128 divisors (see below), whose sum is σ = 120798057600000. Its totient is φ = 14133369032640.

The previous prime is 42942056599601. The next prime is 42942056599679. The reversal of 42942056599656 is 65699565024924.

42942056599656 is a `hidden beast` number, since 4 + 2 + 9 + 4 + 2 + 0 + 565 + 9 + 9 + 6 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1817835 + ... + 9443973.

It is an arithmetic number, because the mean of its divisors is an integer number (943734825000).

Almost surely, 2^{42942056599656} 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 42942056599656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60399028800000).

42942056599656 is an abundant number, since it is smaller than the sum of its proper divisors (77856001000344).

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

42942056599656 is a wasteful number, since it uses less digits than its factorization.

42942056599656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7626484 (or 7626474 counting only the distinct ones).

The product of its (nonzero) digits is 1259712000, while the sum is 72.

The spelling of 42942056599656 in words is "forty-two trillion, nine hundred forty-two billion, fifty-six million, five hundred ninety-nine thousand, six hundred fifty-six".