102059921 has 2 divisors, whose sum is σ = 102059922. Its totient is φ = 102059920.

The previous prime is 102059897. The next prime is 102059933. The reversal of 102059921 is 129950201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96746896 + 5313025 = 9836^2 + 2305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102059921 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102059981) 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, 51029960 + 51029961.

It is an arithmetic number, because the mean of its divisors is an integer number (51029961).

Almost surely, 2^102059921 is an apocalyptic number.

It is an amenable number.

102059921 is a deficient number, since it is larger than the sum of its proper divisors (1).

102059921 is an equidigital number, since it uses as much as digits as its factorization.

102059921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 102059921 is about 10102.4710343559. The cubic root of 102059921 is about 467.3243485884.

The spelling of 102059921 in words is "one hundred two million, fifty-nine thousand, nine hundred twenty-one".