123043530 has 32 divisors (see below), whose sum is σ = 298355904. Its totient is φ = 32472576.

The previous prime is 123043523. The next prime is 123043567. The reversal of 123043530 is 35340321.

It is a junction number, because it is equal to n+sod(n) for n = 123043497 and 123043506.

It is an unprimeable number.

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, 18232 + ... + 24051.

It is an arithmetic number, because the mean of its divisors is an integer number (9323622).

Almost surely, 2^123043530 is an apocalyptic number.

123043530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123043530 is an abundant number, since it is smaller than the sum of its proper divisors (175312374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123043530 is a wasteful number, since it uses less digits than its factorization.

123043530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42390.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 123043530 is about 11092.4988167680. The cubic root of 123043530 is about 497.3776438744.

Adding to 123043530 its reverse (35340321), we get a palindrome (158383851).

The spelling of 123043530 in words is "one hundred twenty-three million, forty-three thousand, five hundred thirty".