139120927 has 4 divisors (see below), whose sum is σ = 151768296. Its totient is φ = 126473560.

The previous prime is 139120921. The next prime is 139120937. The reversal of 139120927 is 729021931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139120927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139120892 and 139120901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139120921) 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, 6323668 + ... + 6323689.

It is an arithmetic number, because the mean of its divisors is an integer number (37942074).

Almost surely, 2^139120927 is an apocalyptic number.

139120927 is a deficient number, since it is larger than the sum of its proper divisors (12647369).

139120927 is a wasteful number, since it uses less digits than its factorization.

139120927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12647368.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 139120927 is about 11794.9534547619. The cubic root of 139120927 is about 518.1603224124.

The spelling of 139120927 in words is "one hundred thirty-nine million, one hundred twenty thousand, nine hundred twenty-seven".