123530040454512 has 80 divisors (see below), whose sum is σ = 322414980683040. Its totient is φ = 40751442640896.

The previous prime is 123530040454493. The next prime is 123530040454517. The reversal of 123530040454512 is 215454040035321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123530040454517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297445918 + ... + 297860930.

It is an arithmetic number, because the mean of its divisors is an integer number (4030187258538).

Almost surely, 2^{123530040454512} is an apocalyptic number.

123530040454512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123530040454512 is an abundant number, since it is smaller than the sum of its proper divisors (198884940228528).

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

123530040454512 is a wasteful number, since it uses less digits than its factorization.

123530040454512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479050 (or 479044 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 123530040454512 its reverse (215454040035321), we get a palindrome (338984080489833).

The spelling of 123530040454512 in words is "one hundred twenty-three trillion, five hundred thirty billion, forty million, four hundred fifty-four thousand, five hundred twelve".