123120203 has 2 divisors, whose sum is σ = 123120204. Its totient is φ = 123120202.

The previous prime is 123120199. The next prime is 123120211. The reversal of 123120203 is 302021321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123120203 - 2² = 123120199 is a prime.

It is a super-2 number, since 2×123120203² = 30317168773522418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123020203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61560101 + 61560102.

It is an arithmetic number, because the mean of its divisors is an integer number (61560102).

Almost surely, 2^123120203 is an apocalyptic number.

123120203 is a deficient number, since it is larger than the sum of its proper divisors (1).

123120203 is an equidigital number, since it uses as much as digits as its factorization.

123120203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 123120203 is about 11095.9543528261. The cubic root of 123120203 is about 497.4809339259.

Adding to 123120203 its reverse (302021321), we get a palindrome (425141524).

The spelling of 123120203 in words is "one hundred twenty-three million, one hundred twenty thousand, two hundred three".