138974125 has 8 divisors (see below), whose sum is σ = 173439864. Its totient is φ = 111179200.

The previous prime is 138974111. The next prime is 138974137. The reversal of 138974125 is 521479831.

It can be written as a sum of positive squares in 4 ways, for example, as 27185796 + 111788329 = 5214^2 + 10573^2 .

It is not a de Polignac number, because 138974125 - 2⁵ = 138974093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555772 + ... + 556021.

It is an arithmetic number, because the mean of its divisors is an integer number (21679983).

Almost surely, 2^138974125 is an apocalyptic number.

It is an amenable number.

138974125 is a deficient number, since it is larger than the sum of its proper divisors (34465739).

138974125 is an equidigital number, since it uses as much as digits as its factorization.

138974125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111808 (or 1111798 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 138974125 is about 11788.7287270511. The cubic root of 138974125 is about 517.9780020274.

The spelling of 138974125 in words is "one hundred thirty-eight million, nine hundred seventy-four thousand, one hundred twenty-five".