123032240 has 40 divisors (see below), whose sum is σ = 287794080. Its totient is φ = 48912896.

The previous prime is 123032219. The next prime is 123032251. The reversal of 123032240 is 42230321.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8756 + ... + 17964.

It is an arithmetic number, because the mean of its divisors is an integer number (7194852).

Almost surely, 2^123032240 is an apocalyptic number.

123032240 is a gapful number since it is divisible by the number (10) 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 123032240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143897040).

123032240 is an abundant number, since it is smaller than the sum of its proper divisors (164761840).

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

123032240 is a wasteful number, since it uses less digits than its factorization.

123032240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9389 (or 9383 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 123032240 is about 11091.9899026279. The cubic root of 123032240 is about 497.3624309240.

Adding to 123032240 its reverse (42230321), we get a palindrome (165262561).

The spelling of 123032240 in words is "one hundred twenty-three million, thirty-two thousand, two hundred forty".