140138263 has 2 divisors, whose sum is σ = 140138264. Its totient is φ = 140138262.

The previous prime is 140138239. The next prime is 140138267. The reversal of 140138263 is 362831041.

140138263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140138263 - 2⁵ = 140138231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140138267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70069131 + 70069132.

It is an arithmetic number, because the mean of its divisors is an integer number (70069132).

Almost surely, 2^140138263 is an apocalyptic number.

140138263 is a deficient number, since it is larger than the sum of its proper divisors (1).

140138263 is an equidigital number, since it uses as much as digits as its factorization.

140138263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 140138263 is about 11838.0008025004. Note that the first 3 decimals coincide. The cubic root of 140138263 is about 519.4202896139.

The spelling of 140138263 in words is "one hundred forty million, one hundred thirty-eight thousand, two hundred sixty-three".