420005173867 has 2 divisors, whose sum is σ = 420005173868. Its totient is φ = 420005173866.

The previous prime is 420005173843. The next prime is 420005173897. The reversal of 420005173867 is 768371500024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420005173867 - 2¹¹ = 420005171819 is a prime.

It is not a weakly prime, because it can be changed into another prime (420005173897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210002586933 + 210002586934.

It is an arithmetic number, because the mean of its divisors is an integer number (210002586934).

Almost surely, 2^420005173867 is an apocalyptic number.

420005173867 is a deficient number, since it is larger than the sum of its proper divisors (1).

420005173867 is an equidigital number, since it uses as much as digits as its factorization.

420005173867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 420005173867 in words is "four hundred twenty billion, five million, one hundred seventy-three thousand, eight hundred sixty-seven".