1830123 has 12 divisors (see below), whose sum is σ = 2705560. Its totient is φ = 1191456.

The previous prime is 1830119. The next prime is 1830163. The reversal of 1830123 is 3210381.

It is not a de Polignac number, because 1830123 - 2² = 1830119 is a prime.

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 = 1830096 and 1830105.

It is not an unprimeable number, because it can be changed into a prime (1830113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1978 + ... + 2751.

2^1830123 is an apocalyptic number.

1830123 is a deficient number, since it is larger than the sum of its proper divisors (875437).

1830123 is a wasteful number, since it uses less digits than its factorization.

1830123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4778 (or 4775 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1830123 is about 1352.8203871911. The cubic root of 1830123 is about 122.3188604237.

It can be divided in two parts, 1830 and 123, that added together give a triangular number (1953 = T₆₂).

The spelling of 1830123 in words is "one million, eight hundred thirty thousand, one hundred twenty-three".