123354240140440 has 64 divisors (see below), whose sum is σ = 288657387200160. Its totient is φ = 47404145617920.

The previous prime is 123354240140431. The next prime is 123354240140477. The reversal of 123354240140440 is 44041042453321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 123354240140440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587744109 + ... + 587953948.

Almost surely, 2^{123354240140440} is an apocalyptic number.

123354240140440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123354240140440 is an abundant number, since it is smaller than the sum of its proper divisors (165303147059720).

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

123354240140440 is a wasteful number, since it uses less digits than its factorization.

123354240140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175698172 (or 1175698168 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 123354240140440 its reverse (44041042453321), we get a palindrome (167395282593761).

The spelling of 123354240140440 in words is "one hundred twenty-three trillion, three hundred fifty-four billion, two hundred forty million, one hundred forty thousand, four hundred forty".