106421166 has 24 divisors (see below), whose sum is σ = 242715720. Its totient is φ = 33606576.

The previous prime is 106421143. The next prime is 106421167. The reversal of 106421166 is 661124601.

106421166 is a `hidden beast` number, since 1 + 0 + 642 + 1 + 16 + 6 = 666.

It is a super-2 number, since 2×106421166² = 22650929145599112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106421167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155245 + ... + 155928.

It is an arithmetic number, because the mean of its divisors is an integer number (10113155).

Almost surely, 2^106421166 is an apocalyptic number.

106421166 is an abundant number, since it is smaller than the sum of its proper divisors (136294554).

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

106421166 is a wasteful number, since it uses less digits than its factorization.

106421166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311200 (or 311197 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 106421166 is about 10316.0634934068. The cubic root of 106421166 is about 473.8883195735. Note that the first 3 decimals are identical.

Adding to 106421166 its reverse (661124601), we get a palindrome (767545767).

The spelling of 106421166 in words is "one hundred six million, four hundred twenty-one thousand, one hundred sixty-six".