1230120123 has 16 divisors (see below), whose sum is σ = 1654304256. Its totient is φ = 813024320.

The previous prime is 1230120113. The next prime is 1230120131. The reversal of 1230120123 is 3210210321.

It is a cyclic number.

It is not a de Polignac number, because 1230120123 - 2¹⁷ = 1229989051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1230120113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422290 + ... + 425192.

It is an arithmetic number, because the mean of its divisors is an integer number (103394016).

Almost surely, 2^1230120123 is an apocalyptic number.

1230120123 is a deficient number, since it is larger than the sum of its proper divisors (424184133).

1230120123 is a wasteful number, since it uses less digits than its factorization.

1230120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1230120123 is about 35073.0683431034. The cubic root of 1230120123 is about 1071.4761478886.

Adding to 1230120123 its reverse (3210210321), we get a palindrome (4440330444).

The spelling of 1230120123 in words is "one billion, two hundred thirty million, one hundred twenty thousand, one hundred twenty-three".