123420245265600 has 672 divisors, whose sum is σ = 447141556108800. Its totient is φ = 29680629350400.

The previous prime is 123420245265521. The next prime is 123420245265617. The reversal of 123420245265600 is 6562542024321.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 187452172 + ... + 188109428.

It is an arithmetic number, because the mean of its divisors is an integer number (665389220400).

Almost surely, 2^{123420245265600} is an apocalyptic number.

123420245265600 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 123420245265600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223570778054400).

123420245265600 is an abundant number, since it is smaller than the sum of its proper divisors (323721310843200).

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

123420245265600 is a wasteful number, since it uses less digits than its factorization.

123420245265600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657401 (or 657386 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 123420245265600 its reverse (6562542024321), we get a palindrome (129982787289921).

The spelling of 123420245265600 in words is "one hundred twenty-three trillion, four hundred twenty billion, two hundred forty-five million, two hundred sixty-five thousand, six hundred".