42428786 has 8 divisors (see below), whose sum is σ = 66992880. Its totient is φ = 20097828.

The previous prime is 42428759. The next prime is 42428791. The reversal of 42428786 is 68782424.

42428786 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 Curzon number.

It is an unprimeable number.

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, 558236 + ... + 558311.

It is an arithmetic number, because the mean of its divisors is an integer number (8374110).

Almost surely, 2^42428786 is an apocalyptic number.

42428786 is a deficient number, since it is larger than the sum of its proper divisors (24564094).

42428786 is a wasteful number, since it uses less digits than its factorization.

42428786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116568.

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

The square root of 42428786 is about 6513.7382508050. The cubic root of 42428786 is about 348.7815755723.

The spelling of 42428786 in words is "forty-two million, four hundred twenty-eight thousand, seven hundred eighty-six".