139125 has 32 divisors (see below), whose sum is σ = 269568. Its totient is φ = 62400.

The previous prime is 139123. The next prime is 139133. The reversal of 139125 is 521931.

It is not a de Polignac number, because 139125 - 2¹ = 139123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139121) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2599 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (8424).

2¹³⁹¹²⁵ is an apocalyptic number.

139125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139125 is a deficient number, since it is larger than the sum of its proper divisors (130443).

139125 is an equidigital number, since it uses as much as digits as its factorization.

139125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 68 counting only the distinct ones).

The product of its digits is 270, while the sum is 21.

The square root of 139125 is about 372.9946380312. The cubic root of 139125 is about 51.8165379036.

The spelling of 139125 in words is "one hundred thirty-nine thousand, one hundred twenty-five".