1200130123 has 2 divisors, whose sum is σ = 1200130124. Its totient is φ = 1200130122.

The previous prime is 1200130097. The next prime is 1200130153. The reversal of 1200130123 is 3210310021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200130123 - 2⁵ = 1200130091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200130153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600065061 + 600065062.

It is an arithmetic number, because the mean of its divisors is an integer number (600065062).

Almost surely, 2^1200130123 is an apocalyptic number.

1200130123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200130123 is an equidigital number, since it uses as much as digits as its factorization.

1200130123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1200130123 is about 34642.8942641922. The cubic root of 1200130123 is about 1062.6969778835.

Adding to 1200130123 its reverse (3210310021), we get a palindrome (4410440144).

It can be divided in two parts, 12001 and 30123, that added together give a palindrome (42124).

The spelling of 1200130123 in words is "one billion, two hundred million, one hundred thirty thousand, one hundred twenty-three".