168855742 has 36 divisors (see below), whose sum is σ = 291254040. Its totient is φ = 73359880.

The previous prime is 168855683. The next prime is 168855749. The reversal of 168855742 is 247558861.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 168855692 and 168855701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168855749) 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 17 ways as a sum of consecutive naturals, for example, 127359 + ... + 128677.

It is an arithmetic number, because the mean of its divisors is an integer number (8090390).

Almost surely, 2^168855742 is an apocalyptic number.

168855742 is a deficient number, since it is larger than the sum of its proper divisors (122398298).

168855742 is a wasteful number, since it uses less digits than its factorization.

168855742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389 (or 1355 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 168855742 is about 12994.4504308570. The cubic root of 168855742 is about 552.7201249499.

The spelling of 168855742 in words is "one hundred sixty-eight million, eight hundred fifty-five thousand, seven hundred forty-two".