210102049 has 2 divisors, whose sum is σ = 210102050. Its totient is φ = 210102048.

The previous prime is 210102047. The next prime is 210102059. The reversal of 210102049 is 940201012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209670400 + 431649 = 14480^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 210102049 - 2¹ = 210102047 is a prime.

Together with 210102047, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210102041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105051024 + 105051025.

It is an arithmetic number, because the mean of its divisors is an integer number (105051025).

Almost surely, 2^210102049 is an apocalyptic number.

It is an amenable number.

210102049 is a deficient number, since it is larger than the sum of its proper divisors (1).

210102049 is an equidigital number, since it uses as much as digits as its factorization.

210102049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 210102049 is about 14494.8973435482. The cubic root of 210102049 is about 594.4884608420.

The spelling of 210102049 in words is "two hundred ten million, one hundred two thousand, forty-nine".