126421483353709 has 2 divisors, whose sum is σ = 126421483353710. Its totient is φ = 126421483353708.

The previous prime is 126421483353701. The next prime is 126421483353721. The reversal of 126421483353709 is 907353384124621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72471679780900 + 53949803572809 = 8513030^2 + 7345053^2 .

It is a cyclic number.

It is not a de Polignac number, because 126421483353709 - 2³ = 126421483353701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126421483353701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63210741676854 + 63210741676855.

It is an arithmetic number, because the mean of its divisors is an integer number (63210741676855).

It is a 1-persistent number, because it is pandigital, but 2⋅126421483353709 = 252842966707418 is not.

Almost surely, 2^{126421483353709} is an apocalyptic number.

It is an amenable number.

126421483353709 is a deficient number, since it is larger than the sum of its proper divisors (1).

126421483353709 is an equidigital number, since it uses as much as digits as its factorization.

126421483353709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26127360, while the sum is 58.

The spelling of 126421483353709 in words is "one hundred twenty-six trillion, four hundred twenty-one billion, four hundred eighty-three million, three hundred fifty-three thousand, seven hundred nine".