102100849 has 2 divisors, whose sum is σ = 102100850. Its totient is φ = 102100848.

The previous prime is 102100837. The next prime is 102100879. The reversal of 102100849 is 948001201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59290000 + 42810849 = 7700^2 + 6543^2 .

It is a cyclic number.

It is not a de Polignac number, because 102100849 - 2⁷ = 102100721 is a prime.

It is not a weakly prime, because it can be changed into another prime (102100829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050424 + 51050425.

It is an arithmetic number, because the mean of its divisors is an integer number (51050425).

Almost surely, 2^102100849 is an apocalyptic number.

It is an amenable number.

102100849 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100849 is an equidigital number, since it uses as much as digits as its factorization.

102100849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 102100849 is about 10104.4964743425. The cubic root of 102100849 is about 467.3868089372.

The spelling of 102100849 in words is "one hundred two million, one hundred thousand, eight hundred forty-nine".