168742005 has 16 divisors (see below), whose sum is σ = 270185280. Its totient is φ = 89929728.

The previous prime is 168741997. The next prime is 168742031. The reversal of 168742005 is 500247861.

168742005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168742005 - 2³ = 168741997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22581 + ... + 29109.

It is an arithmetic number, because the mean of its divisors is an integer number (16886580).

Almost surely, 2^168742005 is an apocalyptic number.

168742005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168742005 is a deficient number, since it is larger than the sum of its proper divisors (101443275).

168742005 is a wasteful number, since it uses less digits than its factorization.

168742005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8260.

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

The square root of 168742005 is about 12990.0733254282. The cubic root of 168742005 is about 552.5959975969.

Adding to 168742005 its reverse (500247861), we get a palindrome (668989866).

The spelling of 168742005 in words is "one hundred sixty-eight million, seven hundred forty-two thousand, five".