210134123 has 2 divisors, whose sum is σ = 210134124. Its totient is φ = 210134122.

The previous prime is 210134117. The next prime is 210134147. The reversal of 210134123 is 321431012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210134123 - 2⁸ = 210133867 is a prime.

It is not a weakly prime, because it can be changed into another prime (210134153) 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, 105067061 + 105067062.

It is an arithmetic number, because the mean of its divisors is an integer number (105067062).

Almost surely, 2^210134123 is an apocalyptic number.

210134123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210134123 is an equidigital number, since it uses as much as digits as its factorization.

210134123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 210134123 is about 14496.0036906728. The cubic root of 210134123 is about 594.5187106703.

Adding to 210134123 its reverse (321431012), we get a palindrome (531565135).

The spelling of 210134123 in words is "two hundred ten million, one hundred thirty-four thousand, one hundred twenty-three".