1042140002221 has 2 divisors, whose sum is σ = 1042140002222. Its totient is φ = 1042140002220.

The previous prime is 1042140002179. The next prime is 1042140002249. The reversal of 1042140002221 is 1222000412401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686702255625 + 355437746596 = 828675^2 + 596186^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042140002221 - 2²⁷ = 1042005784493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042140002291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521070001110 + 521070001111.

It is an arithmetic number, because the mean of its divisors is an integer number (521070001111).

Almost surely, 2^{1042140002221} is an apocalyptic number.

It is an amenable number.

1042140002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042140002221 is an equidigital number, since it uses as much as digits as its factorization.

1042140002221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1042140002221 its reverse (1222000412401), we get a palindrome (2264140414622).

The spelling of 1042140002221 in words is "one trillion, forty-two billion, one hundred forty million, two thousand, two hundred twenty-one".