123030012 has 96 divisors (see below), whose sum is σ = 339816960. Its totient is φ = 33914880.

The previous prime is 123029999. The next prime is 123030029. The reversal of 123030012 is 210030321.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 123030012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478588 + ... + 478844.

It is an arithmetic number, because the mean of its divisors is an integer number (3539760).

Almost surely, 2^123030012 is an apocalyptic number.

123030012 is a gapful number since it is divisible by the number (12) 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 123030012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169908480).

123030012 is an abundant number, since it is smaller than the sum of its proper divisors (216786948).

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

123030012 is a wasteful number, since it uses less digits than its factorization.

123030012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 123030012 is about 11091.8894693375. The cubic root of 123030012 is about 497.3594286481.

Adding to 123030012 its reverse (210030321), we get a palindrome (333060333).

The spelling of 123030012 in words is "one hundred twenty-three million, thirty thousand, twelve".