1042122330421 has 2 divisors, whose sum is σ = 1042122330422. Its totient is φ = 1042122330420.

The previous prime is 1042122330413. The next prime is 1042122330527. The reversal of 1042122330421 is 1240332212401.

1042122330421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 657257189796 + 384865140625 = 810714^2 + 620375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042122330421 - 2³ = 1042122330413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042122360421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521061165210 + 521061165211.

It is an arithmetic number, because the mean of its divisors is an integer number (521061165211).

Almost surely, 2^{1042122330421} is an apocalyptic number.

It is an amenable number.

1042122330421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042122330421 is an equidigital number, since it uses as much as digits as its factorization.

1042122330421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1042122330421 its reverse (1240332212401), we get a palindrome (2282454542822).

The spelling of 1042122330421 in words is "one trillion, forty-two billion, one hundred twenty-two million, three hundred thirty thousand, four hundred twenty-one".