166422132 has 36 divisors (see below), whose sum is σ = 421364580. Its totient is φ = 55383552.

The previous prime is 166422127. The next prime is 166422143. The reversal of 166422132 is 231224661.

166422132 is a `hidden beast` number, since 1 + 6 + 642 + 2 + 13 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21123216 + 145298916 = 4596^2 + 12054^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 166422096 and 166422105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20794 + ... + 27662.

Almost surely, 2^166422132 is an apocalyptic number.

166422132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166422132 is an abundant number, since it is smaller than the sum of its proper divisors (254942448).

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

166422132 is a wasteful number, since it uses less digits than its factorization.

166422132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7552 (or 7547 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 166422132 is about 12900.4702239880. The cubic root of 166422132 is about 550.0519311846.

Adding to 166422132 its reverse (231224661), we get a palindrome (397646793).

The spelling of 166422132 in words is "one hundred sixty-six million, four hundred twenty-two thousand, one hundred thirty-two".