2042042201321 has 4 divisors (see below), whose sum is σ = 2075518303044. Its totient is φ = 2008566099600.

The previous prime is 2042042201293. The next prime is 2042042201377. The reversal of 2042042201321 is 1231022402402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49961190400 + 1992081010921 = 223520^2 + 1411411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042042201321 - 2³⁴ = 2024862332137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2042042201021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16738050770 + ... + 16738050891.

It is an arithmetic number, because the mean of its divisors is an integer number (518879575761).

Almost surely, 2^{2042042201321} is an apocalyptic number.

It is an amenable number.

2042042201321 is a deficient number, since it is larger than the sum of its proper divisors (33476101723).

2042042201321 is an equidigital number, since it uses as much as digits as its factorization.

2042042201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33476101722.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 2042042201321 its reverse (1231022402402), we get a palindrome (3273064603723).

The spelling of 2042042201321 in words is "two trillion, forty-two billion, forty-two million, two hundred one thousand, three hundred twenty-one".