105155123 has 2 divisors, whose sum is σ = 105155124. Its totient is φ = 105155122.

The previous prime is 105155117. The next prime is 105155137. The reversal of 105155123 is 321551501.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (321551501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105155123 - 2¹⁰ = 105154099 is a prime.

It is a super-2 number, since 2×105155123² = 22115199786290258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105155153) 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, 52577561 + 52577562.

It is an arithmetic number, because the mean of its divisors is an integer number (52577562).

Almost surely, 2^105155123 is an apocalyptic number.

105155123 is a deficient number, since it is larger than the sum of its proper divisors (1).

105155123 is an equidigital number, since it uses as much as digits as its factorization.

105155123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 105155123 is about 10254.5171997515. The cubic root of 105155123 is about 472.0016084284.

The spelling of 105155123 in words is "one hundred five million, one hundred fifty-five thousand, one hundred twenty-three".