138719726 has 8 divisors (see below), whose sum is σ = 210586824. Its totient is φ = 68524120.

The previous prime is 138719723. The next prime is 138719753. The reversal of 138719726 is 627917831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138719723) 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 3 ways as a sum of consecutive naturals, for example, 417665 + ... + 417996.

It is an arithmetic number, because the mean of its divisors is an integer number (26323353).

Almost surely, 2^138719726 is an apocalyptic number.

138719726 is a deficient number, since it is larger than the sum of its proper divisors (71867098).

138719726 is an equidigital number, since it uses as much as digits as its factorization.

138719726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835746.

The product of its digits is 127008, while the sum is 44.

The square root of 138719726 is about 11777.9338595528. The cubic root of 138719726 is about 517.6617475368.

The spelling of 138719726 in words is "one hundred thirty-eight million, seven hundred nineteen thousand, seven hundred twenty-six".