123885500 has 24 divisors (see below), whose sum is σ = 270567024. Its totient is φ = 49554000.

The previous prime is 123885499. The next prime is 123885527. The reversal of 123885500 is 5588321.

It is a happy number.

It is a super-2 number, since 2×123885500² = 30695234220500000, 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, 123386 + ... + 124385.

It is an arithmetic number, because the mean of its divisors is an integer number (11273626).

Almost surely, 2^123885500 is an apocalyptic number.

123885500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123885500 is an abundant number, since it is smaller than the sum of its proper divisors (146681524).

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

123885500 is a wasteful number, since it uses less digits than its factorization.

123885500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247790 (or 247778 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 123885500 is about 11130.3863365114. The cubic root of 123885500 is about 498.5095616013.

The spelling of 123885500 in words is "one hundred twenty-three million, eight hundred eighty-five thousand, five hundred".