168122540 has 12 divisors (see below), whose sum is σ = 353057376. Its totient is φ = 67249008.

The previous prime is 168122501. The next prime is 168122543. The reversal of 168122540 is 45221861.

168122540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (168122543) 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 3 ways as a sum of consecutive naturals, for example, 4203044 + ... + 4203083.

It is an arithmetic number, because the mean of its divisors is an integer number (29421448).

Almost surely, 2^168122540 is an apocalyptic number.

168122540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168122540 is an abundant number, since it is smaller than the sum of its proper divisors (184934836).

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

168122540 is a wasteful number, since it uses less digits than its factorization.

168122540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8406136 (or 8406134 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 168122540 is about 12966.2076182668. The cubic root of 168122540 is about 551.9189608330.

The spelling of 168122540 in words is "one hundred sixty-eight million, one hundred twenty-two thousand, five hundred forty".