123403424320 has 112 divisors (see below), whose sum is σ = 339425572608. Its totient is φ = 42234306560.

The previous prime is 123403424231. The next prime is 123403424321. The reversal of 123403424320 is 23424304321.

It is not an unprimeable number, because it can be changed into a prime (123403424321) 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, 971272 + ... + 1090951.

Almost surely, 2^123403424320 is an apocalyptic number.

123403424320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123403424320 is an abundant number, since it is smaller than the sum of its proper divisors (216022148288).

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

123403424320 is a wasteful number, since it uses less digits than its factorization.

123403424320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062268 (or 2062258 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 123403424320 its reverse (23424304321), we get a palindrome (146827728641).

The spelling of 123403424320 in words is "one hundred twenty-three billion, four hundred three million, four hundred twenty-four thousand, three hundred twenty".