168005742 has 16 divisors (see below), whose sum is σ = 336344400. Its totient is φ = 55946432.

The previous prime is 168005711. The next prime is 168005759. The reversal of 168005742 is 247500861.

168005742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7053 + ... + 19640.

It is an arithmetic number, because the mean of its divisors is an integer number (21021525).

Almost surely, 2^168005742 is an apocalyptic number.

168005742 is an abundant number, since it is smaller than the sum of its proper divisors (168338658).

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

168005742 is a wasteful number, since it uses less digits than its factorization.

168005742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27747.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 168005742 is about 12961.7028973820. The cubic root of 168005742 is about 551.7911216104.

The spelling of 168005742 in words is "one hundred sixty-eight million, five thousand, seven hundred forty-two".