123800000 has 84 divisors (see below), whose sum is σ = 307558440. Its totient is φ = 49440000.

The previous prime is 123799969. The next prime is 123800023. The reversal of 123800000 is 8321.

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, 199691 + ... + 200309.

It is an arithmetic number, because the mean of its divisors is an integer number (3661410).

Almost surely, 2^123800000 is an apocalyptic number.

123800000 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 123800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153779220).

123800000 is an abundant number, since it is smaller than the sum of its proper divisors (183758440).

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

123800000 is an frugal number, since it uses more digits than its factorization.

123800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 123800000 is about 11126.5448365609. The cubic root of 123800000 is about 498.3948525173.

Adding to 123800000 its reverse (8321), we get a palindrome (123808321).

The spelling of 123800000 in words is "one hundred twenty-three million, eight hundred thousand".