1301020073 has 2 divisors, whose sum is σ = 1301020074. Its totient is φ = 1301020072.

The previous prime is 1301020057. The next prime is 1301020129. The reversal of 1301020073 is 3700201031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1298016784 + 3003289 = 36028^2 + 1733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301020073 - 2⁴ = 1301020057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1301020873) 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, 650510036 + 650510037.

It is an arithmetic number, because the mean of its divisors is an integer number (650510037).

Almost surely, 2^1301020073 is an apocalyptic number.

It is an amenable number.

1301020073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301020073 is an equidigital number, since it uses as much as digits as its factorization.

1301020073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 1301020073 is about 36069.6558480948. The cubic root of 1301020073 is about 1091.6782700733.

The spelling of 1301020073 in words is "one billion, three hundred one million, twenty thousand, seventy-three".