168002135 has 12 divisors (see below), whose sum is σ = 234517608. Its totient is φ = 115201296.

The previous prime is 168002099. The next prime is 168002173. The reversal of 168002135 is 531200861.

It is not a de Polignac number, because 168002135 - 2⁶ = 168002071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 342617 + ... + 343106.

It is an arithmetic number, because the mean of its divisors is an integer number (19543134).

Almost surely, 2^168002135 is an apocalyptic number.

168002135 is a deficient number, since it is larger than the sum of its proper divisors (66515473).

168002135 is an equidigital number, since it uses as much as digits as its factorization.

168002135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685742 (or 685735 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 168002135 is about 12961.5637559671. The cubic root of 168002135 is about 551.7871726882.

Adding to 168002135 its reverse (531200861), we get a palindrome (699202996).

The spelling of 168002135 in words is "one hundred sixty-eight million, two thousand, one hundred thirty-five".