42856782 has 16 divisors (see below), whose sum is σ = 85888080. Its totient is φ = 14256512.

The previous prime is 42856777. The next prime is 42856819. The reversal of 42856782 is 28765824.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3963 + ... + 10070.

It is an arithmetic number, because the mean of its divisors is an integer number (5368005).

Almost surely, 2^42856782 is an apocalyptic number.

42856782 is an abundant number, since it is smaller than the sum of its proper divisors (43031298).

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

42856782 is a wasteful number, since it uses less digits than its factorization.

42856782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14547.

The product of its digits is 215040, while the sum is 42.

The square root of 42856782 is about 6546.5091461022. The cubic root of 42856782 is about 349.9504201879.

The spelling of 42856782 in words is "forty-two million, eight hundred fifty-six thousand, seven hundred eighty-two".