201234123 has 6 divisors (see below), whose sum is σ = 290671524. Its totient is φ = 134156076.

The previous prime is 201234101. The next prime is 201234169. The reversal of 201234123 is 321432102.

It is not a de Polignac number, because 201234123 - 2⁹ = 201233611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201234096 and 201234105.

It is not an unprimeable number, because it can be changed into a prime (201234193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11179665 + ... + 11179682.

It is an arithmetic number, because the mean of its divisors is an integer number (48445254).

Almost surely, 2^201234123 is an apocalyptic number.

201234123 is a deficient number, since it is larger than the sum of its proper divisors (89437401).

201234123 is a wasteful number, since it uses less digits than its factorization.

201234123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22359353 (or 22359350 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 201234123 is about 14185.7013573528. The cubic root of 201234123 is about 586.0039477965.

Adding to 201234123 its reverse (321432102), we get a palindrome (522666225).

The spelling of 201234123 in words is "two hundred one million, two hundred thirty-four thousand, one hundred twenty-three".