420534431047 has 2 divisors, whose sum is σ = 420534431048. Its totient is φ = 420534431046.

The previous prime is 420534431029. The next prime is 420534431059. The reversal of 420534431047 is 740134435024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420534431047 - 2¹¹ = 420534428999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420534430997 and 420534431015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420534438047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210267215523 + 210267215524.

It is an arithmetic number, because the mean of its divisors is an integer number (210267215524).

Almost surely, 2^420534431047 is an apocalyptic number.

420534431047 is a deficient number, since it is larger than the sum of its proper divisors (1).

420534431047 is an equidigital number, since it uses as much as digits as its factorization.

420534431047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 37.

The spelling of 420534431047 in words is "four hundred twenty billion, five hundred thirty-four million, four hundred thirty-one thousand, forty-seven".