1123204123 has 2 divisors, whose sum is σ = 1123204124. Its totient is φ = 1123204122.

The previous prime is 1123204099. The next prime is 1123204141. The reversal of 1123204123 is 3214023211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123204123 - 2²⁹ = 586333211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1123204123.

It is not a weakly prime, because it can be changed into another prime (1123202123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561602061 + 561602062.

It is an arithmetic number, because the mean of its divisors is an integer number (561602062).

Almost surely, 2^1123204123 is an apocalyptic number.

1123204123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123204123 is an equidigital number, since it uses as much as digits as its factorization.

1123204123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1123204123 is about 33514.2376162729. The cubic root of 1123204123 is about 1039.4881983106.

Adding to 1123204123 its reverse (3214023211), we get a palindrome (4337227334).

The spelling of 1123204123 in words is "one billion, one hundred twenty-three million, two hundred four thousand, one hundred twenty-three".