102125197 has 2 divisors, whose sum is σ = 102125198. Its totient is φ = 102125196.

The previous prime is 102125183. The next prime is 102125201. The reversal of 102125197 is 791521201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71588521 + 30536676 = 8461^2 + 5526^2 .

It is an emirp because it is prime and its reverse (791521201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102125197 - 2¹⁹ = 101600909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102125147) 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, 51062598 + 51062599.

It is an arithmetic number, because the mean of its divisors is an integer number (51062599).

Almost surely, 2^102125197 is an apocalyptic number.

It is an amenable number.

102125197 is a deficient number, since it is larger than the sum of its proper divisors (1).

102125197 is an equidigital number, since it uses as much as digits as its factorization.

102125197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 102125197 is about 10105.7012126819. The cubic root of 102125197 is about 467.4239585778.

Adding to 102125197 its reverse (791521201), we get a palindrome (893646398).

The spelling of 102125197 in words is "one hundred two million, one hundred twenty-five thousand, one hundred ninety-seven".