1312240420404 has 24 divisors (see below), whose sum is σ = 3402104793920. Its totient is φ = 437413473432.

The previous prime is 1312240420357. The next prime is 1312240420417. The reversal of 1312240420404 is 4040240422131.

1312240420404 is a `hidden beast` number, since 1 + 3 + 12 + 240 + 4 + 2 + 0 + 404 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 6075187024 + ... + 6075187239.

Almost surely, 2^{1312240420404} is an apocalyptic number.

It is an amenable number.

1312240420404 is an abundant number, since it is smaller than the sum of its proper divisors (2089864373516).

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

1312240420404 is a wasteful number, since it uses less digits than its factorization.

1312240420404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12150374276 (or 12150374268 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 1312240420404 its reverse (4040240422131), we get a palindrome (5352480842535).

The spelling of 1312240420404 in words is "one trillion, three hundred twelve billion, two hundred forty million, four hundred twenty thousand, four hundred four".