42164166 has 64 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 12260640.

The previous prime is 42164149. The next prime is 42164189. The reversal of 42164166 is 66146124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235465 + ... + 235643.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 2^42164166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42164166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47900160).

42164166 is an abundant number, since it is smaller than the sum of its proper divisors (53636154).

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

42164166 is a wasteful number, since it uses less digits than its factorization.

42164166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its digits is 6912, while the sum is 30.

The square root of 42164166 is about 6493.3940277793. The cubic root of 42164166 is about 348.0549688568.

The spelling of 42164166 in words is "forty-two million, one hundred sixty-four thousand, one hundred sixty-six".