123001320450 has 96 divisors (see below), whose sum is σ = 308667993984. Its totient is φ = 32411658240.

The previous prime is 123001320419. The next prime is 123001320467. The reversal of 123001320450 is 54023100321.

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, 9844107 + ... + 9856593.

It is an arithmetic number, because the mean of its divisors is an integer number (3215291604).

Almost surely, 2^123001320450 is an apocalyptic number.

123001320450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123001320450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154333996992).

123001320450 is an abundant number, since it is smaller than the sum of its proper divisors (185666673534).

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

123001320450 is a wasteful number, since it uses less digits than its factorization.

123001320450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13276 (or 13271 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 123001320450 its reverse (54023100321), we get a palindrome (177024420771).

It can be divided in two parts, 123001320 and 450, that added together give a triangular number (123001770 = T₁₅₆₈₄).

The spelling of 123001320450 in words is "one hundred twenty-three billion, one million, three hundred twenty thousand, four hundred fifty".