166436121 has 16 divisors (see below), whose sum is σ = 226289088. Its totient is φ = 108782400.

The previous prime is 166436093. The next prime is 166436147. The reversal of 166436121 is 121634661.

It is not a de Polignac number, because 166436121 - 2⁵ = 166436089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166436021) 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, 62191 + ... + 64811.

It is an arithmetic number, because the mean of its divisors is an integer number (14143068).

Almost surely, 2^166436121 is an apocalyptic number.

It is an amenable number.

166436121 is a deficient number, since it is larger than the sum of its proper divisors (59852967).

166436121 is a wasteful number, since it uses less digits than its factorization.

166436121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its digits is 5184, while the sum is 30.

The square root of 166436121 is about 12901.0124021334. The cubic root of 166436121 is about 550.0673427183.

The spelling of 166436121 in words is "one hundred sixty-six million, four hundred thirty-six thousand, one hundred twenty-one".