420354235024543 has 2 divisors, whose sum is σ = 420354235024544. Its totient is φ = 420354235024542.

The previous prime is 420354235024499. The next prime is 420354235024567. The reversal of 420354235024543 is 345420532453024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420354235024543 - 2⁴¹ = 418155211768991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420354235024493 and 420354235024502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420354235027543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210177117512271 + 210177117512272.

It is an arithmetic number, because the mean of its divisors is an integer number (210177117512272).

Almost surely, 2^{420354235024543} is an apocalyptic number.

420354235024543 is a deficient number, since it is larger than the sum of its proper divisors (1).

420354235024543 is an equidigital number, since it uses as much as digits as its factorization.

420354235024543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912000, while the sum is 46.

Adding to 420354235024543 its reverse (345420532453024), we get a palindrome (765774767477567).

The spelling of 420354235024543 in words is "four hundred twenty trillion, three hundred fifty-four billion, two hundred thirty-five million, twenty-four thousand, five hundred forty-three".