123442031130 has 64 divisors (see below), whose sum is σ = 330709851648. Its totient is φ = 29229399360.

The previous prime is 123442031117. The next prime is 123442031161. The reversal of 123442031130 is 31130244321.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123442031130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4335424 + ... + 4363803.

It is an arithmetic number, because the mean of its divisors is an integer number (5167341432).

Almost surely, 2^123442031130 is an apocalyptic number.

123442031130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123442031130 is an abundant number, since it is smaller than the sum of its proper divisors (207267820518).

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

123442031130 is a wasteful number, since it uses less digits than its factorization.

123442031130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8699291.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 123442031130 its reverse (31130244321), we get a palindrome (154572275451).

The spelling of 123442031130 in words is "one hundred twenty-three billion, four hundred forty-two million, thirty-one thousand, one hundred thirty".