42704856 has 144 divisors (see below), whose sum is σ = 128381760. Its totient is φ = 12804480.

The previous prime is 42704843. The next prime is 42704863. The reversal of 42704856 is 65840724.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 42704856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 805726 + ... + 805778.

It is an arithmetic number, because the mean of its divisors is an integer number (891540).

Almost surely, 2^42704856 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 42704856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64190880).

42704856 is an abundant number, since it is smaller than the sum of its proper divisors (85676904).

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

42704856 is a wasteful number, since it uses less digits than its factorization.

42704856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 42704856 is about 6534.8952554727. The cubic root of 42704856 is about 349.5364093538.

The spelling of 42704856 in words is "forty-two million, seven hundred four thousand, eight hundred fifty-six".