123835120 has 20 divisors (see below), whose sum is σ = 287916840. Its totient is φ = 49534016.

The previous prime is 123835097. The next prime is 123835121. The reversal of 123835120 is 21538321.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123835121) 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 3 ways as a sum of consecutive naturals, for example, 773890 + ... + 774049.

It is an arithmetic number, because the mean of its divisors is an integer number (14395842).

Almost surely, 2^123835120 is an apocalyptic number.

123835120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123835120 is an abundant number, since it is smaller than the sum of its proper divisors (164081720).

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

123835120 is a wasteful number, since it uses less digits than its factorization.

123835120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547952 (or 1547946 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 123835120 is about 11128.1229324626. The cubic root of 123835120 is about 498.4419768370.

The spelling of 123835120 in words is "one hundred twenty-three million, eight hundred thirty-five thousand, one hundred twenty".