42428712 has 16 divisors (see below), whose sum is σ = 106071840. Its totient is φ = 14142896.

The previous prime is 42428707. The next prime is 42428723. The reversal of 42428712 is 21782424.

It is a self number, because there is not a number n which added to its sum of digits gives 42428712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 883908 + ... + 883955.

It is an arithmetic number, because the mean of its divisors is an integer number (6629490).

Almost surely, 2^42428712 is an apocalyptic number.

It is an amenable number.

42428712 is an abundant number, since it is smaller than the sum of its proper divisors (63643128).

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

42428712 is a wasteful number, since it uses less digits than its factorization.

42428712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767872 (or 1767868 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 42428712 is about 6513.7325705006. The cubic root of 42428712 is about 348.7813728024.

The spelling of 42428712 in words is "forty-two million, four hundred twenty-eight thousand, seven hundred twelve".