123387432 has 48 divisors (see below), whose sum is σ = 352947360. Its totient is φ = 35212416.

The previous prime is 123387427. The next prime is 123387443. The reversal of 123387432 is 234783321.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 123387393 and 123387402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143548 + ... + 144404.

It is an arithmetic number, because the mean of its divisors is an integer number (7353070).

Almost surely, 2^123387432 is an apocalyptic number.

123387432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123387432 is an abundant number, since it is smaller than the sum of its proper divisors (229559928).

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

123387432 is an frugal number, since it uses more digits than its factorization.

123387432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 869 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 123387432 is about 11107.9895570711. The cubic root of 123387432 is about 497.8405967140.

Multiplying 123387432 by its product of digits (24192), we get a square (2984988754944 = 1727712²).

The spelling of 123387432 in words is "one hundred twenty-three million, three hundred eighty-seven thousand, four hundred thirty-two".