126440420063 has 2 divisors, whose sum is σ = 126440420064. Its totient is φ = 126440420062.

The previous prime is 126440420033. The next prime is 126440420089. The reversal of 126440420063 is 360024044621.

It is a strong prime.

It is an emirp because it is prime and its reverse (360024044621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126440420063 - 2¹⁸ = 126440157919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126440420033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63220210031 + 63220210032.

It is an arithmetic number, because the mean of its divisors is an integer number (63220210032).

Almost surely, 2^126440420063 is an apocalyptic number.

126440420063 is a deficient number, since it is larger than the sum of its proper divisors (1).

126440420063 is an equidigital number, since it uses as much as digits as its factorization.

126440420063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 126440420063 its reverse (360024044621), we get a palindrome (486464464684).

The spelling of 126440420063 in words is "one hundred twenty-six billion, four hundred forty million, four hundred twenty thousand, sixty-three".