42784286 has 8 divisors (see below), whose sum is σ = 64744704. Its totient is φ = 21202720.

The previous prime is 42784277. The next prime is 42784289. The reversal of 42784286 is 68248724.

42784286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42784289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94430 + ... + 94881.

It is an arithmetic number, because the mean of its divisors is an integer number (8093088).

Almost surely, 2^42784286 is an apocalyptic number.

42784286 is a deficient number, since it is larger than the sum of its proper divisors (21960418).

42784286 is a wasteful number, since it uses less digits than its factorization.

42784286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189426.

The product of its digits is 172032, while the sum is 41.

The square root of 42784286 is about 6540.9698057704. The cubic root of 42784286 is about 349.7529848919.

The spelling of 42784286 in words is "forty-two million, seven hundred eighty-four thousand, two hundred eighty-six".