139909125 has 16 divisors (see below), whose sum is σ = 232809408. Its totient is φ = 74618000.

The previous prime is 139909117. The next prime is 139909151. The reversal of 139909125 is 521909931.

It is not a de Polignac number, because 139909125 - 2³ = 139909117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186171 + ... + 186920.

It is an arithmetic number, because the mean of its divisors is an integer number (14550588).

Almost surely, 2^139909125 is an apocalyptic number.

139909125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139909125 is a deficient number, since it is larger than the sum of its proper divisors (92900283).

139909125 is an equidigital number, since it uses as much as digits as its factorization.

139909125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373109 (or 373099 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 139909125 is about 11828.3187731816. The cubic root of 139909125 is about 519.1370363670.

The spelling of 139909125 in words is "one hundred thirty-nine million, nine hundred nine thousand, one hundred twenty-five".