123241223420 has 96 divisors (see below), whose sum is σ = 311450334720. Its totient is φ = 40016851200.

The previous prime is 123241223407. The next prime is 123241223429. The reversal of 123241223420 is 24322142321.

It is a self number, because there is not a number n which added to its sum of digits gives 123241223420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123241223429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10769942 + ... + 10781378.

It is an arithmetic number, because the mean of its divisors is an integer number (3244274320).

Almost surely, 2^123241223420 is an apocalyptic number.

123241223420 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 123241223420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155725167360).

123241223420 is an abundant number, since it is smaller than the sum of its proper divisors (188209111300).

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

123241223420 is a wasteful number, since it uses less digits than its factorization.

123241223420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15523 (or 15521 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 123241223420 its reverse (24322142321), we get a palindrome (147563365741).

The spelling of 123241223420 in words is "one hundred twenty-three billion, two hundred forty-one million, two hundred twenty-three thousand, four hundred twenty".