139842168 has 32 divisors (see below), whose sum is σ = 354533760. Its totient is φ = 45956960.

The previous prime is 139842163. The next prime is 139842169. The reversal of 139842168 is 861248931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139842163) 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 7 ways as a sum of consecutive naturals, for example, 39330 + ... + 42737.

It is an arithmetic number, because the mean of its divisors is an integer number (11079180).

Almost surely, 2^139842168 is an apocalyptic number.

It is an amenable number.

139842168 is an abundant number, since it is smaller than the sum of its proper divisors (214691592).

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

139842168 is a wasteful number, since it uses less digits than its factorization.

139842168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82147 (or 82143 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 139842168 is about 11825.4880660377. The cubic root of 139842168 is about 519.0542078284.

The spelling of 139842168 in words is "one hundred thirty-nine million, eight hundred forty-two thousand, one hundred sixty-eight".