2140123529 has 2 divisors, whose sum is σ = 2140123530. Its totient is φ = 2140123528.

The previous prime is 2140123507. The next prime is 2140123589. The reversal of 2140123529 is 9253210412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1457712400 + 682411129 = 38180^2 + 26123^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140123529 - 2²⁰ = 2139074953 is a prime.

It is not a weakly prime, because it can be changed into another prime (2140123589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070061764 + 1070061765.

It is an arithmetic number, because the mean of its divisors is an integer number (1070061765).

Almost surely, 2^2140123529 is an apocalyptic number.

It is an amenable number.

2140123529 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140123529 is an equidigital number, since it uses as much as digits as its factorization.

2140123529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2140123529 is about 46261.4691617117. The cubic root of 2140123529 is about 1288.6835375052.

The spelling of 2140123529 in words is "two billion, one hundred forty million, one hundred twenty-three thousand, five hundred twenty-nine".