123188460 has 192 divisors, whose sum is σ = 391910400. Its totient is φ = 28745728.

The previous prime is 123188459. The next prime is 123188497. The reversal of 123188460 is 64881321.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1384096 + ... + 1384184.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^123188460 is an apocalyptic number.

123188460 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 123188460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195955200).

123188460 is an abundant number, since it is smaller than the sum of its proper divisors (268721940).

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

123188460 is a wasteful number, since it uses less digits than its factorization.

123188460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 123188460 is about 11099.0296873195. The cubic root of 123188460 is about 497.5728502865.

The spelling of 123188460 in words is "one hundred twenty-three million, one hundred eighty-eight thousand, four hundred sixty".