123495120 has 240 divisors, whose sum is σ = 480504960. Its totient is φ = 27841536.

The previous prime is 123495109. The next prime is 123495121. The reversal of 123495120 is 21594321.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123495121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 539166 + ... + 539394.

It is an arithmetic number, because the mean of its divisors is an integer number (2002104).

Almost surely, 2^123495120 is an apocalyptic number.

123495120 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 123495120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240252480).

123495120 is an abundant number, since it is smaller than the sum of its proper divisors (357009840).

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

123495120 is a wasteful number, since it uses less digits than its factorization.

123495120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 123495120 is about 11112.8358216974. The cubic root of 123495120 is about 497.9853869037.

The spelling of 123495120 in words is "one hundred twenty-three million, four hundred ninety-five thousand, one hundred twenty".