102091841 has 2 divisors, whose sum is σ = 102091842. Its totient is φ = 102091840.

The previous prime is 102091831. The next prime is 102091859. The reversal of 102091841 is 148190201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94167616 + 7924225 = 9704^2 + 2815^2 .

It is a cyclic number.

It is not a de Polignac number, because 102091841 - 2⁶ = 102091777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102091841.

It is not a weakly prime, because it can be changed into another prime (102091831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51045920 + 51045921.

It is an arithmetic number, because the mean of its divisors is an integer number (51045921).

Almost surely, 2^102091841 is an apocalyptic number.

It is an amenable number.

102091841 is a deficient number, since it is larger than the sum of its proper divisors (1).

102091841 is an equidigital number, since it uses as much as digits as its factorization.

102091841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 102091841 is about 10104.0507223588. The cubic root of 102091841 is about 467.3730632330.

The spelling of 102091841 in words is "one hundred two million, ninety-one thousand, eight hundred forty-one".