1321535413242 has 64 divisors (see below), whose sum is σ = 3235442382720. Its totient is φ = 396500256000.

The previous prime is 1321535413157. The next prime is 1321535413283. The reversal of 1321535413242 is 2423145351231.

1321535413242 is a `hidden beast` number, since 1 + 3 + 21 + 53 + 541 + 3 + 2 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1321535413197 and 1321535413206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10953903 + ... + 11073890.

It is an arithmetic number, because the mean of its divisors is an integer number (50553787230).

Almost surely, 2^{1321535413242} is an apocalyptic number.

1321535413242 is an abundant number, since it is smaller than the sum of its proper divisors (1913906969478).

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

1321535413242 is a wasteful number, since it uses less digits than its factorization.

1321535413242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22027916 (or 22027910 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The spelling of 1321535413242 in words is "one trillion, three hundred twenty-one billion, five hundred thirty-five million, four hundred thirteen thousand, two hundred forty-two".