1042334331421 has 2 divisors, whose sum is σ = 1042334331422. Its totient is φ = 1042334331420.

The previous prime is 1042334331373. The next prime is 1042334331433. The reversal of 1042334331421 is 1241334332401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973351935396 + 68982396025 = 986586^2 + 262645^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042334331421 - 2¹¹ = 1042334329373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042334331491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521167165710 + 521167165711.

It is an arithmetic number, because the mean of its divisors is an integer number (521167165711).

Almost surely, 2^{1042334331421} is an apocalyptic number.

It is an amenable number.

1042334331421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042334331421 is an equidigital number, since it uses as much as digits as its factorization.

1042334331421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 1042334331421 its reverse (1241334332401), we get a palindrome (2283668663822).

The spelling of 1042334331421 in words is "one trillion, forty-two billion, three hundred thirty-four million, three hundred thirty-one thousand, four hundred twenty-one".