166121334 has 32 divisors (see below), whose sum is σ = 372080640. Its totient is φ = 54935496.

The previous prime is 166121321. The next prime is 166121339. The reversal of 166121334 is 433121661.

166121334 is a `hidden beast` number, since 1 + 6 + 612 + 13 + 34 = 666.

166121334 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 166121298 and 166121307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166121339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5254 + ... + 18969.

It is an arithmetic number, because the mean of its divisors is an integer number (11627520).

Almost surely, 2^166121334 is an apocalyptic number.

166121334 is an abundant number, since it is smaller than the sum of its proper divisors (205959306).

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

166121334 is a wasteful number, since it uses less digits than its factorization.

166121334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24361 (or 24355 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 166121334 is about 12888.8065390090. The cubic root of 166121334 is about 549.7203360575.

Adding to 166121334 its reverse (433121661), we get a palindrome (599242995).

The spelling of 166121334 in words is "one hundred sixty-six million, one hundred twenty-one thousand, three hundred thirty-four".