166266342 has 72 divisors (see below), whose sum is σ = 400560888. Its totient is φ = 49800960.

The previous prime is 166266293. The next prime is 166266343. The reversal of 166266342 is 243662661.

166266342 is a `hidden beast` number, since 16 + 6 + 2 + 6 + 634 + 2 = 666.

166266342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166266297 and 166266306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166266343) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 210873 + ... + 211659.

Almost surely, 2^166266342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166266342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200280444).

166266342 is an abundant number, since it is smaller than the sum of its proper divisors (234294546).

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

166266342 is a wasteful number, since it uses less digits than its factorization.

166266342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 900 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 166266342 is about 12894.4306582338. The cubic root of 166266342 is about 549.8802405916.

The spelling of 166266342 in words is "one hundred sixty-six million, two hundred sixty-six thousand, three hundred forty-two".