102655123 has 2 divisors, whose sum is σ = 102655124. Its totient is φ = 102655122.

The previous prime is 102655121. The next prime is 102655127. The reversal of 102655123 is 321556201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102655123 - 2¹ = 102655121 is a prime.

Together with 102655121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102655121) 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, 51327561 + 51327562.

It is an arithmetic number, because the mean of its divisors is an integer number (51327562).

Almost surely, 2^102655123 is an apocalyptic number.

102655123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102655123 is an equidigital number, since it uses as much as digits as its factorization.

102655123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 102655123 is about 10131.8864482386. The cubic root of 102655123 is about 468.2310493170.

The spelling of 102655123 in words is "one hundred two million, six hundred fifty-five thousand, one hundred twenty-three".