140505168 has 20 divisors (see below), whose sum is σ = 362971808. Its totient is φ = 46835040.

The previous prime is 140505163. The next prime is 140505181. The reversal of 140505168 is 861505041.

It is a super-3 number, since 3×140505168³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140505161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1463548 + ... + 1463643.

Almost surely, 2^140505168 is an apocalyptic number.

It is an amenable number.

140505168 is an abundant number, since it is smaller than the sum of its proper divisors (222466640).

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

140505168 is a wasteful number, since it uses less digits than its factorization.

140505168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927202 (or 2927196 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 140505168 is about 11853.4875880477. The cubic root of 140505168 is about 519.8732037987.

The spelling of 140505168 in words is "one hundred forty million, five hundred five thousand, one hundred sixty-eight".