1320402040432 has 80 divisors (see below), whose sum is σ = 2601470509120. Its totient is φ = 649115596800.

The previous prime is 1320402040387. The next prime is 1320402040453. The reversal of 1320402040432 is 2340402040231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1320402040397 and 1320402040406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709511182 + ... + 709513042.

It is an arithmetic number, because the mean of its divisors is an integer number (32518381364).

Almost surely, 2^{1320402040432} is an apocalyptic number.

It is an amenable number.

1320402040432 is a deficient number, since it is larger than the sum of its proper divisors (1281068468688).

1320402040432 is a wasteful number, since it uses less digits than its factorization.

1320402040432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522 (or 3516 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 1320402040432 its reverse (2340402040231), we get a palindrome (3660804080663).

The spelling of 1320402040432 in words is "one trillion, three hundred twenty billion, four hundred two million, forty thousand, four hundred thirty-two".