1001247073 has 2 divisors, whose sum is σ = 1001247074. Its totient is φ = 1001247072.

The previous prime is 1001247067. The next prime is 1001247097. The reversal of 1001247073 is 3707421001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 777684769 + 223562304 = 27887^2 + 14952^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001247073 - 2²⁵ = 967692641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001247053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500623536 + 500623537.

It is an arithmetic number, because the mean of its divisors is an integer number (500623537).

Almost surely, 2^1001247073 is an apocalyptic number.

It is an amenable number.

1001247073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001247073 is an equidigital number, since it uses as much as digits as its factorization.

1001247073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 1001247073 is about 31642.4884135240. The cubic root of 1001247073 is about 1000.4155183206.

Adding to 1001247073 its reverse (3707421001), we get a palindrome (4708668074).

The spelling of 1001247073 in words is "one billion, one million, two hundred forty-seven thousand, seventy-three".