1321302042242 has 32 divisors (see below), whose sum is σ = 2439806767104. Its totient is φ = 522610056000.

The previous prime is 1321302042199. The next prime is 1321302042293. The reversal of 1321302042242 is 2422402031231.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216767 + ... + 1639997.

It is an arithmetic number, because the mean of its divisors is an integer number (76243961472).

Almost surely, 2^{1321302042242} is an apocalyptic number.

1321302042242 is a deficient number, since it is larger than the sum of its proper divisors (1118504724862).

1321302042242 is a wasteful number, since it uses less digits than its factorization.

1321302042242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428354.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1321302042242 its reverse (2422402031231), we get a palindrome (3743704073473).

The spelling of 1321302042242 in words is "one trillion, three hundred twenty-one billion, three hundred two million, forty-two thousand, two hundred forty-two".