168135042 has 16 divisors (see below), whose sum is σ = 336621312. Its totient is φ = 55986480.

The previous prime is 168135017. The next prime is 168135059. The reversal of 168135042 is 240531861.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8193 + ... + 20084.

It is an arithmetic number, because the mean of its divisors is an integer number (21038832).

Almost surely, 2^168135042 is an apocalyptic number.

168135042 is an abundant number, since it is smaller than the sum of its proper divisors (168486270).

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

168135042 is a wasteful number, since it uses less digits than its factorization.

168135042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29273.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 168135042 is about 12966.6897086342. The cubic root of 168135042 is about 551.9326411716.

The spelling of 168135042 in words is "one hundred sixty-eight million, one hundred thirty-five thousand, forty-two".