168142995 has 24 divisors (see below), whose sum is σ = 304121376. Its totient is φ = 85776768.

The previous prime is 168142991. The next prime is 168143057. The reversal of 168142995 is 599241861.

It is not a de Polignac number, because 168142995 - 2² = 168142991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 168142995.

It is not an unprimeable number, because it can be changed into a prime (168142991) 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 23 ways as a sum of consecutive naturals, for example, 80194 + ... + 82263.

It is an arithmetic number, because the mean of its divisors is an integer number (12671724).

Almost surely, 2^168142995 is an apocalyptic number.

168142995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

168142995 is a deficient number, since it is larger than the sum of its proper divisors (135978381).

168142995 is a wasteful number, since it uses less digits than its factorization.

168142995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162491 (or 162488 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 168142995 is about 12966.9963754140. The cubic root of 168142995 is about 551.9413434049.

The spelling of 168142995 in words is "one hundred sixty-eight million, one hundred forty-two thousand, nine hundred ninety-five".