42791166 has 120 divisors (see below), whose sum is σ = 110076120. Its totient is φ = 12402720.

The previous prime is 42791137. The next prime is 42791183. The reversal of 42791166 is 66119724.

Its product of digits (18144) is a multiple of the sum of its prime divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 42791166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 725245 + ... + 725303.

It is an arithmetic number, because the mean of its divisors is an integer number (917301).

Almost surely, 2^42791166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42791166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55038060).

42791166 is an abundant number, since it is smaller than the sum of its proper divisors (67284954).

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

42791166 is a wasteful number, since it uses less digits than its factorization.

42791166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 112 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 42791166 is about 6541.4957005260. The cubic root of 42791166 is about 349.7717314286.

It can be divided in two parts, 4279 and 1166, that added together give a palindrome (5445).

The spelling of 42791166 in words is "forty-two million, seven hundred ninety-one thousand, one hundred sixty-six".