168719642 has 32 divisors (see below), whose sum is σ = 317856000. Its totient is φ = 66742704.

The previous prime is 168719641. The next prime is 168719653. The reversal of 168719642 is 246917861.

It is a junction number, because it is equal to n+sod(n) for n = 168719593 and 168719602.

It is not an unprimeable number, because it can be changed into a prime (168719641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542 + ... + 18377.

It is an arithmetic number, because the mean of its divisors is an integer number (9933000).

Almost surely, 2^168719642 is an apocalyptic number.

168719642 is a deficient number, since it is larger than the sum of its proper divisors (149136358).

168719642 is a wasteful number, since it uses less digits than its factorization.

168719642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18955 (or 18941 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 168719642 is about 12989.2125242449. The cubic root of 168719642 is about 552.5715850818.

The spelling of 168719642 in words is "one hundred sixty-eight million, seven hundred nineteen thousand, six hundred forty-two".