1042121204321 has 8 divisors (see below), whose sum is σ = 1103454679680. Its totient is φ = 980791309888.

The previous prime is 1042121204297. The next prime is 1042121204323. The reversal of 1042121204321 is 1234021212401.

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

It is not a de Polignac number, because 1042121204321 - 2¹⁰ = 1042121203297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042121204323) 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, 284141 + ... + 1471386.

It is an arithmetic number, because the mean of its divisors is an integer number (137931834960).

Almost surely, 2^{1042121204321} is an apocalyptic number.

It is an amenable number.

1042121204321 is a deficient number, since it is larger than the sum of its proper divisors (61333475359).

1042121204321 is a wasteful number, since it uses less digits than its factorization.

1042121204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790463.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1042121204321 its reverse (1234021212401), we get a palindrome (2276142416722).

The spelling of 1042121204321 in words is "one trillion, forty-two billion, one hundred twenty-one million, two hundred four thousand, three hundred twenty-one".