138120526 has 8 divisors (see below), whose sum is σ = 210019104. Its totient is φ = 68114160.

The previous prime is 138120511. The next prime is 138120553. The reversal of 138120526 is 625021831.

138120526 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 138120494 and 138120503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472870 + ... + 473161.

It is an arithmetic number, because the mean of its divisors is an integer number (26252388).

Almost surely, 2^138120526 is an apocalyptic number.

138120526 is a deficient number, since it is larger than the sum of its proper divisors (71898578).

138120526 is an equidigital number, since it uses as much as digits as its factorization.

138120526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946106.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 138120526 is about 11752.4689321010. The cubic root of 138120526 is about 516.9153249606.

The spelling of 138120526 in words is "one hundred thirty-eight million, one hundred twenty thousand, five hundred twenty-six".