123723900 has 216 divisors, whose sum is σ = 417056640. Its totient is φ = 30602880.

The previous prime is 123723851. The next prime is 123723907. The reversal of 123723900 is 9327321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123723907) 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 71 ways as a sum of consecutive naturals, for example, 890031 + ... + 890169.

Almost surely, 2^123723900 is an apocalyptic number.

123723900 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 123723900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208528320).

123723900 is an abundant number, since it is smaller than the sum of its proper divisors (293332740).

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

123723900 is a wasteful number, since it uses less digits than its factorization.

123723900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 123723900 is about 11123.1245610215. The cubic root of 123723900 is about 498.2927102923.

The spelling of 123723900 in words is "one hundred twenty-three million, seven hundred twenty-three thousand, nine hundred".