168171426 has 12 divisors (see below), whose sum is σ = 364371462. Its totient is φ = 56057136.

The previous prime is 168171379. The next prime is 168171427. The reversal of 168171426 is 624171861.

It is a happy number.

168171426 is a `hidden beast` number, since 1 + 68 + 171 + 426 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87441201 + 80730225 = 9351^2 + 8985^2 .

It is not an unprimeable number, because it can be changed into a prime (168171427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4671411 + ... + 4671446.

Almost surely, 2^168171426 is an apocalyptic number.

168171426 is an abundant number, since it is smaller than the sum of its proper divisors (196200036).

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

168171426 is a wasteful number, since it uses less digits than its factorization.

168171426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9342865 (or 9342862 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 168171426 is about 12968.0926122541. The cubic root of 168171426 is about 551.9724505784.

The spelling of 168171426 in words is "one hundred sixty-eight million, one hundred seventy-one thousand, four hundred twenty-six".