138752375 has 8 divisors (see below), whose sum is σ = 173163120. Its totient is φ = 111001800.

The previous prime is 138752371. The next prime is 138752381. The reversal of 138752375 is 573257831.

It is not a de Polignac number, because 138752375 - 2² = 138752371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138752371) 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, 554885 + ... + 555134.

It is an arithmetic number, because the mean of its divisors is an integer number (21645390).

Almost surely, 2^138752375 is an apocalyptic number.

138752375 is a deficient number, since it is larger than the sum of its proper divisors (34410745).

138752375 is an equidigital number, since it uses as much as digits as its factorization.

138752375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110034 (or 1110024 counting only the distinct ones).

The product of its digits is 176400, while the sum is 41.

The square root of 138752375 is about 11779.3198020938. The cubic root of 138752375 is about 517.7023565478.

The spelling of 138752375 in words is "one hundred thirty-eight million, seven hundred fifty-two thousand, three hundred seventy-five".