123030 has 24 divisors (see below), whose sum is σ = 320112. Its totient is φ = 32784.

The previous prime is 123017. The next prime is 123031. The reversal of 123030 is 30321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031) by changing a digit.

123030 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 594 + ... + 773.

It is an arithmetic number, because the mean of its divisors is an integer number (13338).

2¹²³⁰³⁰ is an apocalyptic number.

123030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123030 is an abundant number, since it is smaller than the sum of its proper divisors (197082).

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

123030 is a wasteful number, since it uses less digits than its factorization.

123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 123030 is about 350.7563256735. The cubic root of 123030 is about 49.7359412478.

Adding to 123030 its reverse (30321), we get a palindrome (153351).

The spelling of 123030 in words is "one hundred twenty-three thousand, thirty".