102002249 has 2 divisors, whose sum is σ = 102002250. Its totient is φ = 102002248.

The previous prime is 102002191. The next prime is 102002281. The reversal of 102002249 is 942200201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63313849 + 38688400 = 7957^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 102002249 - 2⁸ = 102001993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102002249.

It is not a weakly prime, because it can be changed into another prime (102004249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51001124 + 51001125.

It is an arithmetic number, because the mean of its divisors is an integer number (51001125).

Almost surely, 2^102002249 is an apocalyptic number.

It is an amenable number.

102002249 is a deficient number, since it is larger than the sum of its proper divisors (1).

102002249 is an equidigital number, since it uses as much as digits as its factorization.

102002249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 102002249 is about 10099.6162798395. The cubic root of 102002249 is about 467.2363068192.

The spelling of 102002249 in words is "one hundred two million, two thousand, two hundred forty-nine".