1321405302042 has 48 divisors (see below), whose sum is σ = 3273868583232. Its totient is φ = 377334676800.

The previous prime is 1321405302031. The next prime is 1321405302043. The reversal of 1321405302042 is 2402035041231.

1321405302042 is a `hidden beast` number, since 1 + 3 + 21 + 405 + 30 + 204 + 2 = 666.

It is a super-2 number, since 2×1321405302042² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321405301997 and 1321405302015.

It is not an unprimeable number, because it can be changed into a prime (1321405302043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2684608 + ... + 3138459.

It is an arithmetic number, because the mean of its divisors is an integer number (68205595484).

Almost surely, 2^{1321405302042} is an apocalyptic number.

1321405302042 is an abundant number, since it is smaller than the sum of its proper divisors (1952463281190).

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

1321405302042 is a wasteful number, since it uses less digits than its factorization.

1321405302042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5824883 (or 5824880 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 1321405302042 in words is "one trillion, three hundred twenty-one billion, four hundred five million, three hundred two thousand, forty-two".