139426568 has 32 divisors (see below), whose sum is σ = 270466560. Its totient is φ = 67336320.

The previous prime is 139426549. The next prime is 139426589. The reversal of 139426568 is 865624931.

139426568 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 31721 + ... + 35847.

It is an arithmetic number, because the mean of its divisors is an integer number (8452080).

Almost surely, 2^139426568 is an apocalyptic number.

It is an amenable number.

139426568 is a deficient number, since it is larger than the sum of its proper divisors (131039992).

139426568 is a wasteful number, since it uses less digits than its factorization.

139426568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277 (or 4273 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 139426568 is about 11807.9027773775. The cubic root of 139426568 is about 518.5395014149.

The spelling of 139426568 in words is "one hundred thirty-nine million, four hundred twenty-six thousand, five hundred sixty-eight".