123428203 has 2 divisors, whose sum is σ = 123428204. Its totient is φ = 123428202.

The previous prime is 123428191. The next prime is 123428209. The reversal of 123428203 is 302824321.

It is a strong prime.

It is an emirp because it is prime and its reverse (302824321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123428203 - 2¹⁷ = 123297131 is a prime.

It is not a weakly prime, because it can be changed into another prime (123428209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61714101 + 61714102.

It is an arithmetic number, because the mean of its divisors is an integer number (61714102).

Almost surely, 2^123428203 is an apocalyptic number.

123428203 is a deficient number, since it is larger than the sum of its proper divisors (1).

123428203 is an equidigital number, since it uses as much as digits as its factorization.

123428203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 123428203 is about 11109.8246160774. The cubic root of 123428203 is about 497.8954246205.

The spelling of 123428203 in words is "one hundred twenty-three million, four hundred twenty-eight thousand, two hundred three".