123000550 has 24 divisors (see below), whose sum is σ = 238730256. Its totient is φ = 47060640.

The previous prime is 123000539. The next prime is 123000557. The reversal of 123000550 is 55000321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123000557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52329 + ... + 54628.

It is an arithmetic number, because the mean of its divisors is an integer number (9947094).

Almost surely, 2^123000550 is an apocalyptic number.

123000550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123000550 is a deficient number, since it is larger than the sum of its proper divisors (115729706).

123000550 is a wasteful number, since it uses less digits than its factorization.

123000550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106992 (or 106987 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 123000550 is about 11090.5613022967. The cubic root of 123000550 is about 497.3197245871.

Adding to 123000550 its reverse (55000321), we get a palindrome (178000871).

The spelling of 123000550 in words is "one hundred twenty-three million, five hundred fifty", and thus it is an aban number.