102100073 has 2 divisors, whose sum is σ = 102100074. Its totient is φ = 102100072.

The previous prime is 102100069. The next prime is 102100093. The reversal of 102100073 is 370001201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68029504 + 34070569 = 8248^2 + 5837^2 .

It is a cyclic number.

It is not a de Polignac number, because 102100073 - 2² = 102100069 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102100003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050036 + 51050037.

It is an arithmetic number, because the mean of its divisors is an integer number (51050037).

Almost surely, 2^102100073 is an apocalyptic number.

It is an amenable number.

102100073 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100073 is an equidigital number, since it uses as much as digits as its factorization.

102100073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 102100073 is about 10104.4580755229. The cubic root of 102100073 is about 467.3856248364.

Adding to 102100073 its reverse (370001201), we get a palindrome (472101274).

The spelling of 102100073 in words is "one hundred two million, one hundred thousand, seventy-three".