123920500 has 48 divisors (see below), whose sum is σ = 295259328. Its totient is φ = 45060000.

The previous prime is 123920471. The next prime is 123920501. The reversal of 123920500 is 5029321.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123920501) 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 15 ways as a sum of consecutive naturals, for example, 5766 + ... + 16765.

It is an arithmetic number, because the mean of its divisors is an integer number (6151236).

Almost surely, 2^123920500 is an apocalyptic number.

123920500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123920500 is an abundant number, since it is smaller than the sum of its proper divisors (171338828).

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

123920500 is a wasteful number, since it uses less digits than its factorization.

123920500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22561 (or 22549 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 123920500 is about 11131.9584979464. The cubic root of 123920500 is about 498.5565033117.

Adding to 123920500 its reverse (5029321), we get a palindrome (128949821).

The spelling of 123920500 in words is "one hundred twenty-three million, nine hundred twenty thousand, five hundred".