1230000123 has 16 divisors (see below), whose sum is σ = 1832729472. Its totient is φ = 727272000.

The previous prime is 1230000103. The next prime is 1230000127. The reversal of 1230000123 is 3210000321.

It is a happy number.

It is not a de Polignac number, because 1230000123 - 2⁵ = 1230000091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230000099 and 1230000108.

It is not an unprimeable number, because it can be changed into a prime (1230000127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453193 + ... + 455898.

It is an arithmetic number, because the mean of its divisors is an integer number (114545592).

Almost surely, 2^1230000123 is an apocalyptic number.

1230000123 is a deficient number, since it is larger than the sum of its proper divisors (602729349).

1230000123 is a wasteful number, since it uses less digits than its factorization.

1230000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909146.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1230000123 is about 35071.3575870681. The cubic root of 1230000123 is about 1071.4413054055.

Adding to 1230000123 its reverse (3210000321), we get a palindrome (4440000444).

It can be divided in two parts, 1230000 and 123, that multiplied together give a square (151290000 = 12300²).

The spelling of 1230000123 in words is "one billion, two hundred thirty million, one hundred twenty-three", and thus it is an aban number.