12400210040 has 32 divisors (see below), whose sum is σ = 29541678480. Its totient is φ = 4668314112.

The previous prime is 12400210013. The next prime is 12400210061. The reversal of 12400210040 is 4001200421.

It is a super-2 number, since 2×12400210040² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12400209997 and 12400210024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9117122 + ... + 9118481.

Almost surely, 2^12400210040 is an apocalyptic number.

12400210040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12400210040 is an abundant number, since it is smaller than the sum of its proper divisors (17141468440).

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

12400210040 is a wasteful number, since it uses less digits than its factorization.

12400210040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18235631 (or 18235627 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12400210040 its reverse (4001200421), we get a palindrome (16401410461).

The spelling of 12400210040 in words is "twelve billion, four hundred million, two hundred ten thousand, forty".