139025144 has 8 divisors (see below), whose sum is σ = 260672160. Its totient is φ = 69512568.

The previous prime is 139025141. The next prime is 139025221. The reversal of 139025144 is 441520931.

139025144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139025141) 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 as a sum of consecutive naturals, namely, 8689064 + ... + 8689079.

It is an arithmetic number, because the mean of its divisors is an integer number (32584020).

Almost surely, 2^139025144 is an apocalyptic number.

It is an amenable number.

139025144 is a deficient number, since it is larger than the sum of its proper divisors (121647016).

139025144 is a wasteful number, since it uses less digits than its factorization.

139025144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17378149 (or 17378145 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 139025144 is about 11790.8924174551. The cubic root of 139025144 is about 518.0413795002.

The spelling of 139025144 in words is "one hundred thirty-nine million, twenty-five thousand, one hundred forty-four".