2140512139 has 2 divisors, whose sum is σ = 2140512140. Its totient is φ = 2140512138.

The previous prime is 2140512091. The next prime is 2140512193. The reversal of 2140512139 is 9312150412.

Together with next prime (2140512193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2140512139 - 2⁹ = 2140511627 is a prime.

It is not a weakly prime, because it can be changed into another prime (2140512739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070256069 + 1070256070.

It is an arithmetic number, because the mean of its divisors is an integer number (1070256070).

Almost surely, 2^2140512139 is an apocalyptic number.

2140512139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140512139 is an equidigital number, since it uses as much as digits as its factorization.

2140512139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2140512139 is about 46265.6691186889. The cubic root of 2140512139 is about 1288.7615337818.

The spelling of 2140512139 in words is "two billion, one hundred forty million, five hundred twelve thousand, one hundred thirty-nine".