123696500 has 24 divisors (see below), whose sum is σ = 270154248. Its totient is φ = 49478400.

The previous prime is 123696499. The next prime is 123696523. The reversal of 123696500 is 5696321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 131044 + 123565456 = 362^2 + 11116^2 .

It is a super-2 number, since 2×123696500² = 30601648224500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123197 + ... + 124196.

It is an arithmetic number, because the mean of its divisors is an integer number (11256427).

Almost surely, 2^123696500 is an apocalyptic number.

123696500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123696500 is an abundant number, since it is smaller than the sum of its proper divisors (146457748).

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

123696500 is a wasteful number, since it uses less digits than its factorization.

123696500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247412 (or 247400 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 123696500 is about 11121.8928245151. The cubic root of 123696500 is about 498.2559234676.

The spelling of 123696500 in words is "one hundred twenty-three million, six hundred ninety-six thousand, five hundred".