1002706921 has 2 divisors, whose sum is σ = 1002706922. Its totient is φ = 1002706920.

The previous prime is 1002706889. The next prime is 1002706927. The reversal of 1002706921 is 1296072001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 867891600 + 134815321 = 29460^2 + 11611^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002706921 - 2⁵ = 1002706889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002706921.

It is not a weakly prime, because it can be changed into another prime (1002706927) 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, 501353460 + 501353461.

It is an arithmetic number, because the mean of its divisors is an integer number (501353461).

Almost surely, 2^1002706921 is an apocalyptic number.

It is an amenable number.

1002706921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002706921 is an equidigital number, since it uses as much as digits as its factorization.

1002706921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1002706921 is about 31665.5478556743. The cubic root of 1002706921 is about 1000.9014940642.

Adding to 1002706921 its reverse (1296072001), we get a palindrome (2298778922).

The spelling of 1002706921 in words is "one billion, two million, seven hundred six thousand, nine hundred twenty-one".