123125500 has 24 divisors (see below), whose sum is σ = 268907184. Its totient is φ = 49250000.

The previous prime is 123125467. The next prime is 123125531. The reversal of 123125500 is 5521321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122626 + ... + 123625.

It is an arithmetic number, because the mean of its divisors is an integer number (11204466).

Almost surely, 2^123125500 is an apocalyptic number.

123125500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123125500 is an abundant number, since it is smaller than the sum of its proper divisors (145781684).

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

123125500 is a wasteful number, since it uses less digits than its factorization.

123125500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246270 (or 246258 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 123125500 is about 11096.1930408587. The cubic root of 123125500 is about 497.4880681970.

Adding to 123125500 its reverse (5521321), we get a palindrome (128646821).

The spelling of 123125500 in words is "one hundred twenty-three million, one hundred twenty-five thousand, five hundred".