166053123 has 12 divisors (see below), whose sum is σ = 250283280. Its totient is φ = 105888816.

The previous prime is 166053113. The next prime is 166053131. The reversal of 166053123 is 321350661.

166053123 is a `hidden beast` number, since 1 + 6 + 605 + 31 + 23 = 666.

It is not a de Polignac number, because 166053123 - 2⁹ = 166052611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166053113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400888 + ... + 401301.

It is an arithmetic number, because the mean of its divisors is an integer number (20856940).

Almost surely, 2^166053123 is an apocalyptic number.

166053123 is a deficient number, since it is larger than the sum of its proper divisors (84230157).

166053123 is a wasteful number, since it uses less digits than its factorization.

166053123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802218 (or 802215 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 166053123 is about 12886.1601340353. The cubic root of 166053123 is about 549.6450856240.

It can be divided in two parts, 166053 and 123, that added together give a triangular number (166176 = T₅₇₆).

The spelling of 166053123 in words is "one hundred sixty-six million, fifty-three thousand, one hundred twenty-three".