168736742 has 8 divisors (see below), whose sum is σ = 253181136. Its totient is φ = 84343032.

The previous prime is 168736723. The next prime is 168736783. The reversal of 168736742 is 247637861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 168736693 and 168736702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2813 + ... + 18584.

It is an arithmetic number, because the mean of its divisors is an integer number (31647642).

Almost surely, 2^168736742 is an apocalyptic number.

168736742 is a deficient number, since it is larger than the sum of its proper divisors (84444394).

168736742 is a wasteful number, since it uses less digits than its factorization.

168736742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25342.

The product of its digits is 338688, while the sum is 44.

The square root of 168736742 is about 12989.8707460852. The cubic root of 168736742 is about 552.5902524497.

The spelling of 168736742 in words is "one hundred sixty-eight million, seven hundred thirty-six thousand, seven hundred forty-two".