200242123 has 2 divisors, whose sum is σ = 200242124. Its totient is φ = 200242122.

The previous prime is 200242111. The next prime is 200242153. The reversal of 200242123 is 321242002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200242123 - 2²⁵ = 166687691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200242097 and 200242106.

It is not a weakly prime, because it can be changed into another prime (200242103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100121061 + 100121062.

It is an arithmetic number, because the mean of its divisors is an integer number (100121062).

Almost surely, 2^200242123 is an apocalyptic number.

200242123 is a deficient number, since it is larger than the sum of its proper divisors (1).

200242123 is an equidigital number, since it uses as much as digits as its factorization.

200242123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 200242123 is about 14150.6933752378. The cubic root of 200242123 is about 585.0394431242.

Adding to 200242123 its reverse (321242002), we get a palindrome (521484125).

The spelling of 200242123 in words is "two hundred million, two hundred forty-two thousand, one hundred twenty-three".