123053643232440 has 128 divisors (see below), whose sum is σ = 369401492736000. Its totient is φ = 32792928616448.

The previous prime is 123053643232439. The next prime is 123053643232477. The reversal of 123053643232440 is 44232346350321.

It is a super-2 number, since 2×123053643232440² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123053643232392 and 123053643232401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1169225341 + ... + 1169330579.

It is an arithmetic number, because the mean of its divisors is an integer number (2885949162000).

Almost surely, 2^{123053643232440} is an apocalyptic number.

123053643232440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123053643232440 is an abundant number, since it is smaller than the sum of its proper divisors (246347849503560).

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

123053643232440 is a wasteful number, since it uses less digits than its factorization.

123053643232440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111509 (or 111505 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 42.

Adding to 123053643232440 its reverse (44232346350321), we get a palindrome (167285989582761).

The spelling of 123053643232440 in words is "one hundred twenty-three trillion, fifty-three billion, six hundred forty-three million, two hundred thirty-two thousand, four hundred forty".