139069128 has 32 divisors (see below), whose sum is σ = 379280160. Its totient is φ = 42142080.

The previous prime is 139069121. The next prime is 139069141. The reversal of 139069128 is 821960931.

It is not an unprimeable number, because it can be changed into a prime (139069121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263125 + ... + 263652.

It is an arithmetic number, because the mean of its divisors is an integer number (11852505).

Almost surely, 2^139069128 is an apocalyptic number.

It is an amenable number.

139069128 is an abundant number, since it is smaller than the sum of its proper divisors (240211032).

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

139069128 is a wasteful number, since it uses less digits than its factorization.

139069128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526797 (or 526793 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 139069128 is about 11792.7574383602. The cubic root of 139069128 is about 518.0960054211.

The spelling of 139069128 in words is "one hundred thirty-nine million, sixty-nine thousand, one hundred twenty-eight".