1002140129 has 2 divisors, whose sum is σ = 1002140130. Its totient is φ = 1002140128.

The previous prime is 1002140101. The next prime is 1002140171. The reversal of 1002140129 is 9210412001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 799362529 + 202777600 = 28273^2 + 14240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002140129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002140129.

It is not a weakly prime, because it can be changed into another prime (1002140179) 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, 501070064 + 501070065.

It is an arithmetic number, because the mean of its divisors is an integer number (501070065).

Almost surely, 2^1002140129 is an apocalyptic number.

It is an amenable number.

1002140129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002140129 is an equidigital number, since it uses as much as digits as its factorization.

1002140129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1002140129 is about 31656.5969270230. The cubic root of 1002140129 is about 1000.7128680317.

The spelling of 1002140129 in words is "one billion, two million, one hundred forty thousand, one hundred twenty-nine".