123532500 has 240 divisors, whose sum is σ = 445757312. Its totient is φ = 25920000.

The previous prime is 123532483. The next prime is 123532501. The reversal of 123532500 is 5235321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123532501) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 682410 + ... + 682590.

Almost surely, 2^123532500 is an apocalyptic number.

123532500 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 123532500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222878656).

123532500 is an abundant number, since it is smaller than the sum of its proper divisors (322224812).

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

123532500 is a wasteful number, since it uses less digits than its factorization.

123532500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 123532500 is about 11114.5175333885. The cubic root of 123532500 is about 498.0356259089.

Adding to 123532500 its reverse (5235321), we get a palindrome (128767821).

The spelling of 123532500 in words is "one hundred twenty-three million, five hundred thirty-two thousand, five hundred".