140782139 has 2 divisors, whose sum is σ = 140782140. Its totient is φ = 140782138.

The previous prime is 140782127. The next prime is 140782141. The reversal of 140782139 is 931287041.

It is a strong prime.

It is an emirp because it is prime and its reverse (931287041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140782139 - 2⁴ = 140782123 is a prime.

It is a super-2 number, since 2×140782139² = 39639221322830642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 140782141, 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 = 140782099 and 140782108.

It is not a weakly prime, because it can be changed into another prime (140782199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70391069 + 70391070.

It is an arithmetic number, because the mean of its divisors is an integer number (70391070).

Almost surely, 2^140782139 is an apocalyptic number.

140782139 is a deficient number, since it is larger than the sum of its proper divisors (1).

140782139 is an equidigital number, since it uses as much as digits as its factorization.

140782139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 140782139 is about 11865.1649377495. The cubic root of 140782139 is about 520.2145798332.

The spelling of 140782139 in words is "one hundred forty million, seven hundred eighty-two thousand, one hundred thirty-nine".