102040073 has 2 divisors, whose sum is σ = 102040074. Its totient is φ = 102040072.

The previous prime is 102040061. The next prime is 102040079. The reversal of 102040073 is 370040201.

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., 83960569 + 18079504 = 9163^2 + 4252^2 .

It is a cyclic number.

It is not a de Polignac number, because 102040073 - 2²⁰ = 100991497 is a prime.

It is not a weakly prime, because it can be changed into another prime (102040079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51020036 + 51020037.

It is an arithmetic number, because the mean of its divisors is an integer number (51020037).

Almost surely, 2^102040073 is an apocalyptic number.

It is an amenable number.

102040073 is a deficient number, since it is larger than the sum of its proper divisors (1).

102040073 is an equidigital number, since it uses as much as digits as its factorization.

102040073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 102040073 is about 10101.4886526690. The cubic root of 102040073 is about 467.2940524809.

Adding to 102040073 its reverse (370040201), we get a palindrome (472080274).

The spelling of 102040073 in words is "one hundred two million, forty thousand, seventy-three".