123243425220552 has 192 divisors, whose sum is σ = 382930589508480. Its totient is φ = 32364257642496.

The previous prime is 123243425220473. The next prime is 123243425220571. The reversal of 123243425220552 is 255022524342321.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2699643 + ... + 15930314.

It is an arithmetic number, because the mean of its divisors is an integer number (1994430153690).

Almost surely, 2^{123243425220552} is an apocalyptic number.

123243425220552 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 123243425220552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191465294754240).

123243425220552 is an abundant number, since it is smaller than the sum of its proper divisors (259687164287928).

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

123243425220552 is a wasteful number, since it uses less digits than its factorization.

123243425220552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18630232 (or 18630215 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 123243425220552 its reverse (255022524342321), we get a palindrome (378265949562873).

The spelling of 123243425220552 in words is "one hundred twenty-three trillion, two hundred forty-three billion, four hundred twenty-five million, two hundred twenty thousand, five hundred fifty-two".