123015000 has 160 divisors (see below), whose sum is σ = 393624000. Its totient is φ = 32016000.

The previous prime is 123014993. The next prime is 123015007. The reversal of 123015000 is 510321.

It is an interprime number because it is at equal distance from previous prime (123014993) and next prime (123015007).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123015007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 884931 + ... + 885069.

It is an arithmetic number, because the mean of its divisors is an integer number (2460150).

Almost surely, 2^123015000 is an apocalyptic number.

123015000 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 123015000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196812000).

123015000 is an abundant number, since it is smaller than the sum of its proper divisors (270609000).

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

123015000 is a wasteful number, since it uses less digits than its factorization.

123015000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 123015000 is about 11091.2127380192. The cubic root of 123015000 is about 497.3391987240.

Adding to 123015000 its reverse (510321), we get a palindrome (123525321).

The spelling of 123015000 in words is "one hundred twenty-three million, fifteen thousand".