123329532 has 48 divisors (see below), whose sum is σ = 312704000. Its totient is φ = 37687680.

The previous prime is 123329491. The next prime is 123329537. The reversal of 123329532 is 235923321.

It is a self number, because there is not a number n which added to its sum of digits gives 123329532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123329537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657 + ... + 15792.

Almost surely, 2^123329532 is an apocalyptic number.

123329532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123329532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156352000).

123329532 is an abundant number, since it is smaller than the sum of its proper divisors (189374468).

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

123329532 is a wasteful number, since it uses less digits than its factorization.

123329532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17506 (or 17504 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 123329532 is about 11105.3830190588. The cubic root of 123329532 is about 497.7627133618.

The spelling of 123329532 in words is "one hundred twenty-three million, three hundred twenty-nine thousand, five hundred thirty-two".