1203134123 has 4 divisors (see below), whose sum is σ = 1204762920. Its totient is φ = 1201505328.

The previous prime is 1203134111. The next prime is 1203134159. The reversal of 1203134123 is 3214313021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1203134123 - 2¹⁴ = 1203117739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203134095 and 1203134104.

It is not an unprimeable number, because it can be changed into a prime (1203134173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813290 + ... + 814767.

It is an arithmetic number, because the mean of its divisors is an integer number (301190730).

Almost surely, 2^1203134123 is an apocalyptic number.

1203134123 is a deficient number, since it is larger than the sum of its proper divisors (1628797).

1203134123 is an equidigital number, since it uses as much as digits as its factorization.

1203134123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628796.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1203134123 is about 34686.2238215693. The cubic root of 1203134123 is about 1063.5829045607.

Adding to 1203134123 its reverse (3214313021), we get a palindrome (4417447144).

The spelling of 1203134123 in words is "one billion, two hundred three million, one hundred thirty-four thousand, one hundred twenty-three".