123255245201440 has 48 divisors (see below), whose sum is σ = 317662381955520. Its totient is φ = 44820089163520.

The previous prime is 123255245201419. The next prime is 123255245201441. The reversal of 123255245201440 is 44102542552321.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 123255245201393 and 123255245201402.

It is not an unprimeable number, because it can be changed into a prime (123255245201441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35015692900 + ... + 35015696419.

It is an arithmetic number, because the mean of its divisors is an integer number (6617966290740).

Almost surely, 2^{123255245201440} is an apocalyptic number.

123255245201440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123255245201440 is an abundant number, since it is smaller than the sum of its proper divisors (194407136754080).

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

123255245201440 is a wasteful number, since it uses less digits than its factorization.

123255245201440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70031389345 (or 70031389337 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 123255245201440 its reverse (44102542552321), we get a palindrome (167357787753761).

The spelling of 123255245201440 in words is "one hundred twenty-three trillion, two hundred fifty-five billion, two hundred forty-five million, two hundred one thousand, four hundred forty".