2042043121 has 2 divisors, whose sum is σ = 2042043122. Its totient is φ = 2042043120.

The previous prime is 2042043103. The next prime is 2042043131. The reversal of 2042043121 is 1213402402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1892250000 + 149793121 = 43500^2 + 12239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042043121 - 2²⁷ = 1907825393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2042043131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021021560 + 1021021561.

It is an arithmetic number, because the mean of its divisors is an integer number (1021021561).

Almost surely, 2^2042043121 is an apocalyptic number.

It is an amenable number.

2042043121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042043121 is an equidigital number, since it uses as much as digits as its factorization.

2042043121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2042043121 is about 45188.9712319278. The cubic root of 2042043121 is about 1268.6884016265.

Adding to 2042043121 its reverse (1213402402), we get a palindrome (3255445523).

The spelling of 2042043121 in words is "two billion, forty-two million, forty-three thousand, one hundred twenty-one".