139706141 has 2 divisors, whose sum is σ = 139706142. Its totient is φ = 139706140.

The previous prime is 139706123. The next prime is 139706143. The reversal of 139706141 is 141607931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82264900 + 57441241 = 9070^2 + 7579^2 .

It is a cyclic number.

It is not a de Polignac number, because 139706141 - 2²⁶ = 72597277 is a prime.

It is a super-2 number, since 2×139706141² = 39035611666223762, which contains 22 as substring.

Together with 139706143, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 139706098 and 139706107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139706143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69853070 + 69853071.

It is an arithmetic number, because the mean of its divisors is an integer number (69853071).

Almost surely, 2^139706141 is an apocalyptic number.

It is an amenable number.

139706141 is a deficient number, since it is larger than the sum of its proper divisors (1).

139706141 is an equidigital number, since it uses as much as digits as its factorization.

139706141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 139706141 is about 11819.7352339213. The cubic root of 139706141 is about 518.8858554324.

The spelling of 139706141 in words is "one hundred thirty-nine million, seven hundred six thousand, one hundred forty-one".