42794856 has 72 divisors (see below), whose sum is σ = 125539830. Its totient is φ = 13163904.

The previous prime is 42794839. The next prime is 42794861. The reversal of 42794856 is 65849724.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 33246756 + 9548100 = 5766^2 + 3090^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10410 + ... + 13926.

Almost surely, 2^42794856 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 42794856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62769915).

42794856 is an abundant number, since it is smaller than the sum of its proper divisors (82744974).

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

42794856 is a wasteful number, since it uses less digits than its factorization.

42794856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555 (or 3535 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 42794856 is about 6541.7777400337. Note that the first 4 decimals coincide. The cubic root of 42794856 is about 349.7817850660.

The spelling of 42794856 in words is "forty-two million, seven hundred ninety-four thousand, eight hundred fifty-six".