200120123 has 16 divisors (see below), whose sum is σ = 231751680. Its totient is φ = 169265376.

The previous prime is 200120069. The next prime is 200120131. The reversal of 200120123 is 321021002.

It is a happy number.

It is not a de Polignac number, because 200120123 - 2¹⁶ = 200054587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200120143) 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 15 ways as a sum of consecutive naturals, for example, 203090 + ... + 204072.

It is an arithmetic number, because the mean of its divisors is an integer number (14484480).

Almost surely, 2^200120123 is an apocalyptic number.

200120123 is a deficient number, since it is larger than the sum of its proper divisors (31631557).

200120123 is a wasteful number, since it uses less digits than its factorization.

200120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 200120123 is about 14146.3819756148. The cubic root of 200120123 is about 584.9206048045.

Adding to 200120123 its reverse (321021002), we get a palindrome (521141125).

The spelling of 200120123 in words is "two hundred million, one hundred twenty thousand, one hundred twenty-three".