168356742 has 32 divisors (see below), whose sum is σ = 349332480. Its totient is φ = 54050880.

The previous prime is 168356731. The next prime is 168356743. The reversal of 168356742 is 247653861.

It is a junction number, because it is equal to n+sod(n) for n = 168356694 and 168356703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168356743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15103 + ... + 23765.

It is an arithmetic number, because the mean of its divisors is an integer number (10916640).

Almost surely, 2^168356742 is an apocalyptic number.

168356742 is an abundant number, since it is smaller than the sum of its proper divisors (180975738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168356742 is a wasteful number, since it uses less digits than its factorization.

168356742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8788.

The product of its digits is 241920, while the sum is 42.

The square root of 168356742 is about 12975.2357204022. The cubic root of 168356742 is about 552.1751242819.

The spelling of 168356742 in words is "one hundred sixty-eight million, three hundred fifty-six thousand, seven hundred forty-two".