1320421535423 has 8 divisors (see below), whose sum is σ = 1353205329840. Its totient is φ = 1287665283520.

The previous prime is 1320421535393. The next prime is 1320421535431. The reversal of 1320421535423 is 3245351240231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320421535423 - 2⁶ = 1320421535359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320421535623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6788540 + ... + 6980337.

It is an arithmetic number, because the mean of its divisors is an integer number (169150666230).

Almost surely, 2^{1320421535423} is an apocalyptic number.

1320421535423 is a deficient number, since it is larger than the sum of its proper divisors (32783794417).

1320421535423 is a wasteful number, since it uses less digits than its factorization.

1320421535423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13771257.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 1320421535423 its reverse (3245351240231), we get a palindrome (4565772775654).

The spelling of 1320421535423 in words is "one trillion, three hundred twenty billion, four hundred twenty-one million, five hundred thirty-five thousand, four hundred twenty-three".