123238400 has 144 divisors (see below), whose sum is σ = 319901400. Its totient is φ = 47022080.

The previous prime is 123238369. The next prime is 123238417. The reversal of 123238400 is 4832321.

It is a congruent number.

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, 1484759 + ... + 1484841.

Almost surely, 2^123238400 is an apocalyptic number.

123238400 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 123238400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159950700).

123238400 is an abundant number, since it is smaller than the sum of its proper divisors (196663000).

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

123238400 is an equidigital number, since it uses as much as digits as its factorization.

123238400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 123238400 is about 11101.2792055691. The cubic root of 123238400 is about 497.6400790703.

The spelling of 123238400 in words is "one hundred twenty-three million, two hundred thirty-eight thousand, four hundred".