138842125 has 16 divisors (see below), whose sum is σ = 173721600. Its totient is φ = 110787600.

The previous prime is 138842107. The next prime is 138842147. The reversal of 138842125 is 521248831.

It is a happy number.

It is not a de Polignac number, because 138842125 - 2⁹ = 138841613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56676 + ... + 59074.

It is an arithmetic number, because the mean of its divisors is an integer number (10857600).

Almost surely, 2^138842125 is an apocalyptic number.

It is an amenable number.

138842125 is a deficient number, since it is larger than the sum of its proper divisors (34879475).

138842125 is an equidigital number, since it uses as much as digits as its factorization.

138842125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877 (or 2867 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 138842125 is about 11783.1288289656. The cubic root of 138842125 is about 517.8139552909.

The spelling of 138842125 in words is "one hundred thirty-eight million, eight hundred forty-two thousand, one hundred twenty-five".