168142711 has 4 divisors (see below), whose sum is σ = 183428424. Its totient is φ = 152857000.

The previous prime is 168142693. The next prime is 168142721. The reversal of 168142711 is 117241861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 168142711 - 2¹⁷ = 168011639 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168142721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7642840 + ... + 7642861.

It is an arithmetic number, because the mean of its divisors is an integer number (45857106).

Almost surely, 2^168142711 is an apocalyptic number.

168142711 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

168142711 is a deficient number, since it is larger than the sum of its proper divisors (15285713).

168142711 is a wasteful number, since it uses less digits than its factorization.

168142711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15285712.

The product of its digits is 2688, while the sum is 31.

The square root of 168142711 is about 12966.9854245310. The cubic root of 168142711 is about 551.9410326547.

The spelling of 168142711 in words is "one hundred sixty-eight million, one hundred forty-two thousand, seven hundred eleven".