42420440441 has 2 divisors, whose sum is σ = 42420440442. Its totient is φ = 42420440440.

The previous prime is 42420440431. The next prime is 42420440473. The reversal of 42420440441 is 14404402424.

42420440441 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., 40171784041 + 2248656400 = 200429^2 + 47420^2 .

It is a cyclic number.

It is not a de Polignac number, because 42420440441 - 2²² = 42416246137 is a prime.

It is not a weakly prime, because it can be changed into another prime (42420440401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21210220220 + 21210220221.

It is an arithmetic number, because the mean of its divisors is an integer number (21210220221).

Almost surely, 2^42420440441 is an apocalyptic number.

It is an amenable number.

42420440441 is a deficient number, since it is larger than the sum of its proper divisors (1).

42420440441 is an equidigital number, since it uses as much as digits as its factorization.

42420440441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 42420440441 its reverse (14404402424), we get a palindrome (56824842865).

The spelling of 42420440441 in words is "forty-two billion, four hundred twenty million, four hundred forty thousand, four hundred forty-one".