139155172 has 24 divisors (see below), whose sum is σ = 265954752. Its totient is φ = 63319200.

The previous prime is 139155161. The next prime is 139155173. The reversal of 139155172 is 271551931.

It is not an unprimeable number, because it can be changed into a prime (139155173) 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, 15154 + ... + 22537.

It is an arithmetic number, because the mean of its divisors is an integer number (11081448).

Almost surely, 2^139155172 is an apocalyptic number.

It is an amenable number.

139155172 is a deficient number, since it is larger than the sum of its proper divisors (126799580).

139155172 is a wasteful number, since it uses less digits than its factorization.

139155172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37779 (or 37777 counting only the distinct ones).

The product of its digits is 9450, while the sum is 34.

The square root of 139155172 is about 11796.4050456061. The cubic root of 139155172 is about 518.2028344554.

The spelling of 139155172 in words is "one hundred thirty-nine million, one hundred fifty-five thousand, one hundred seventy-two".