168240141 has 12 divisors (see below), whose sum is σ = 243320220. Its totient is φ = 112018560.

The previous prime is 168240139. The next prime is 168240157. The reversal of 168240141 is 141042861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18275625 + 149964516 = 4275^2 + 12246^2 .

It is not a de Polignac number, because 168240141 - 2¹ = 168240139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168240161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3996 + ... + 18773.

It is an arithmetic number, because the mean of its divisors is an integer number (20276685).

Almost surely, 2^168240141 is an apocalyptic number.

It is an amenable number.

168240141 is a deficient number, since it is larger than the sum of its proper divisors (75080079).

168240141 is a wasteful number, since it uses less digits than its factorization.

168240141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23596 (or 23593 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 168240141 is about 12970.7417289837. The cubic root of 168240141 is about 552.0476191591.

The spelling of 168240141 in words is "one hundred sixty-eight million, two hundred forty thousand, one hundred forty-one".