123489534 has 32 divisors (see below), whose sum is σ = 283495680. Its totient is φ = 35128512.

The previous prime is 123489533. The next prime is 123489557. The reversal of 123489534 is 435984321.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123489492 and 123489501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123489533) 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, 3477 + ... + 16095.

It is an arithmetic number, because the mean of its divisors is an integer number (8859240).

Almost surely, 2^123489534 is an apocalyptic number.

123489534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123489534 is an abundant number, since it is smaller than the sum of its proper divisors (160006146).

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

123489534 is a wasteful number, since it uses less digits than its factorization.

123489534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12864.

The product of its digits is 103680, while the sum is 39.

The square root of 123489534 is about 11112.5844878678. The cubic root of 123489534 is about 497.9778784064.

The spelling of 123489534 in words is "one hundred twenty-three million, four hundred eighty-nine thousand, five hundred thirty-four".