102450121 has 2 divisors, whose sum is σ = 102450122. Its totient is φ = 102450120.

The previous prime is 102450097. The next prime is 102450181. The reversal of 102450121 is 121054201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102414400 + 35721 = 10120^2 + 189^2 .

It is a cyclic number.

It is not a de Polignac number, because 102450121 - 2¹³ = 102441929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102450095 and 102450104.

It is not a weakly prime, because it can be changed into another prime (102450181) 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, 51225060 + 51225061.

It is an arithmetic number, because the mean of its divisors is an integer number (51225061).

Almost surely, 2^102450121 is an apocalyptic number.

It is an amenable number.

102450121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102450121 is an equidigital number, since it uses as much as digits as its factorization.

102450121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 102450121 is about 10121.7647176765. The cubic root of 102450121 is about 467.9191562331.

The spelling of 102450121 in words is "one hundred two million, four hundred fifty thousand, one hundred twenty-one".