123144030 has 64 divisors (see below), whose sum is σ = 330696000. Its totient is φ = 32607360.

The previous prime is 123144013. The next prime is 123144037. The reversal of 123144030 is 30441321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123143994 and 123144012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123144037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38700 + ... + 41760.

It is an arithmetic number, because the mean of its divisors is an integer number (5167125).

Almost surely, 2^123144030 is an apocalyptic number.

123144030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123144030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165348000).

123144030 is an abundant number, since it is smaller than the sum of its proper divisors (207551970).

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

123144030 is a wasteful number, since it uses less digits than its factorization.

123144030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226 (or 3220 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 123144030 is about 11097.0279805000. The cubic root of 123144030 is about 497.5130237409.

Adding to 123144030 its reverse (30441321), we get a palindrome (153585351).

The spelling of 123144030 in words is "one hundred twenty-three million, one hundred forty-four thousand, thirty".