42428988 has 48 divisors (see below), whose sum is σ = 125717760. Its totient is φ = 12122352.

The previous prime is 42428963. The next prime is 42428993. The reversal of 42428988 is 88982424.

It is a happy number.

42428988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 27306 + ... + 28817.

It is an arithmetic number, because the mean of its divisors is an integer number (2619120).

Almost surely, 2^42428988 is an apocalyptic number.

It is an amenable number.

42428988 is an abundant number, since it is smaller than the sum of its proper divisors (83288772).

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

42428988 is a wasteful number, since it uses less digits than its factorization.

42428988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56143 (or 56135 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 42428988 is about 6513.7537564756. The cubic root of 42428988 is about 348.7821290784.

The spelling of 42428988 in words is "forty-two million, four hundred twenty-eight thousand, nine hundred eighty-eight".