42666988 has 48 divisors (see below), whose sum is σ = 92461824. Its totient is φ = 16776000.

The previous prime is 42666983. The next prime is 42667003. The reversal of 42666988 is 88966624.

42666988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42666983) 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 15 ways as a sum of consecutive naturals, for example, 91131 + ... + 91597.

It is an arithmetic number, because the mean of its divisors is an integer number (1926288).

Almost surely, 2^42666988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42666988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46230912).

42666988 is an abundant number, since it is smaller than the sum of its proper divisors (49794836).

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

42666988 is a wasteful number, since it uses less digits than its factorization.

42666988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742 (or 740 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 42666988 is about 6531.9972443350. The cubic root of 42666988 is about 349.4330631127.

The spelling of 42666988 in words is "forty-two million, six hundred sixty-six thousand, nine hundred eighty-eight".