139127705 has 8 divisors (see below), whose sum is σ = 167101704. Its totient is φ = 111203200.

The previous prime is 139127699. The next prime is 139127743. The reversal of 139127705 is 507721931.

It is a happy number.

139127705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22401289 + 116726416 = 4733^2 + 10804^2 .

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

It is not a de Polignac number, because 139127705 - 2¹⁸ = 138865561 is a prime.

It is a Duffinian 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, 5876 + ... + 17685.

It is an arithmetic number, because the mean of its divisors is an integer number (20887713).

Almost surely, 2^139127705 is an apocalyptic number.

It is an amenable number.

139127705 is a deficient number, since it is larger than the sum of its proper divisors (27973999).

139127705 is a wasteful number, since it uses less digits than its factorization.

139127705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24747.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 139127705 is about 11795.2407775340. The cubic root of 139127705 is about 518.1687372347.

The spelling of 139127705 in words is "one hundred thirty-nine million, one hundred twenty-seven thousand, seven hundred five".