42004422422461 has 2 divisors, whose sum is σ = 42004422422462. Its totient is φ = 42004422422460.

The previous prime is 42004422422401. The next prime is 42004422422507. The reversal of 42004422422461 is 16422422440024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31559283595225 + 10445138827236 = 5617765^2 + 3231894^2 .

It is a cyclic number.

It is not a de Polignac number, because 42004422422461 - 2³⁹ = 41454666608573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42004422422461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42004422422401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21002211211230 + 21002211211231.

It is an arithmetic number, because the mean of its divisors is an integer number (21002211211231).

Almost surely, 2^{42004422422461} is an apocalyptic number.

It is an amenable number.

42004422422461 is a deficient number, since it is larger than the sum of its proper divisors (1).

42004422422461 is an equidigital number, since it uses as much as digits as its factorization.

42004422422461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196608, while the sum is 37.

Adding to 42004422422461 its reverse (16422422440024), we get a palindrome (58426844862485).

The spelling of 42004422422461 in words is "forty-two trillion, four billion, four hundred twenty-two million, four hundred twenty-two thousand, four hundred sixty-one".