123342332520 has 512 divisors, whose sum is σ = 435124224000. Its totient is φ = 27906278400.

The previous prime is 123342332501. The next prime is 123342332527. The reversal of 123342332520 is 25233243321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (123342332527) 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 127 ways as a sum of consecutive naturals, for example, 143587851 + ... + 143588709.

It is an arithmetic number, because the mean of its divisors is an integer number (849852000).

Almost surely, 2^123342332520 is an apocalyptic number.

123342332520 is a gapful number since it is divisible by the number (10) 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 123342332520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217562112000).

123342332520 is an abundant number, since it is smaller than the sum of its proper divisors (311781891480).

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

123342332520 is a wasteful number, since it uses less digits than its factorization.

123342332520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 123342332520 its reverse (25233243321), we get a palindrome (148575575841).

The spelling of 123342332520 in words is "one hundred twenty-three billion, three hundred forty-two million, three hundred thirty-two thousand, five hundred twenty".