123021530298 has 16 divisors (see below), whose sum is σ = 273381178560. Its totient is φ = 41007176748.

The previous prime is 123021530197. The next prime is 123021530299. The reversal of 123021530298 is 892035120321.

123021530298 is a `hidden beast` number, since 1 + 2 + 30 + 2 + 1 + 530 + 2 + 98 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123021530299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139088190 + ... + 1139088297.

It is an arithmetic number, because the mean of its divisors is an integer number (17086323660).

Almost surely, 2^123021530298 is an apocalyptic number.

123021530298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

123021530298 is an abundant number, since it is smaller than the sum of its proper divisors (150359648262).

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

123021530298 is a wasteful number, since it uses less digits than its factorization.

123021530298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278176498 (or 2278176492 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 123021530298 in words is "one hundred twenty-three billion, twenty-one million, five hundred thirty thousand, two hundred ninety-eight".