123642203 has 2 divisors, whose sum is σ = 123642204. Its totient is φ = 123642202.

The previous prime is 123642193. The next prime is 123642251. The reversal of 123642203 is 302246321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123642203 - 2⁴ = 123642187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123342203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61821101 + 61821102.

It is an arithmetic number, because the mean of its divisors is an integer number (61821102).

Almost surely, 2^123642203 is an apocalyptic number.

123642203 is a deficient number, since it is larger than the sum of its proper divisors (1).

123642203 is an equidigital number, since it uses as much as digits as its factorization.

123642203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 123642203 is about 11119.4515602164. The cubic root of 123642203 is about 498.1830090863.

Adding to 123642203 its reverse (302246321), we get a palindrome (425888524).

The spelling of 123642203 in words is "one hundred twenty-three million, six hundred forty-two thousand, two hundred three".