1230123 has 16 divisors (see below), whose sum is σ = 1715616. Its totient is φ = 783360.

The previous prime is 1230107. The next prime is 1230127. The reversal of 1230123 is 3210321.

It is a happy number.

It is not a de Polignac number, because 1230123 - 2⁴ = 1230107 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1230099 and 1230108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230127) 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, 8911 + ... + 9047.

It is an arithmetic number, because the mean of its divisors is an integer number (107226).

2^1230123 is an apocalyptic number.

1230123 is a deficient number, since it is larger than the sum of its proper divisors (485493).

1230123 is a wasteful number, since it uses less digits than its factorization.

1230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

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

The square root of 1230123 is about 1109.1091019372. The cubic root of 1230123 is about 107.1476983209.

Adding to 1230123 its reverse (3210321), we get a palindrome (4440444).

It can be divided in two parts, 12 and 30123, that added together give a triangular number (30135 = T₂₄₅).

The spelling of 1230123 in words is "one million, two hundred thirty thousand, one hundred twenty-three".