420584423 has 4 divisors (see below), whose sum is σ = 480667920. Its totient is φ = 360500928.

The previous prime is 420584413. The next prime is 420584449. The reversal of 420584423 is 324485024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420584423 - 2⁴ = 420584407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420584423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420584413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30041738 + ... + 30041751.

It is an arithmetic number, because the mean of its divisors is an integer number (120166980).

Almost surely, 2^420584423 is an apocalyptic number.

420584423 is a deficient number, since it is larger than the sum of its proper divisors (60083497).

420584423 is an equidigital number, since it uses as much as digits as its factorization.

420584423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60083496.

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 420584423 is about 20508.1550364727. The cubic root of 420584423 is about 749.2344324373.

The spelling of 420584423 in words is "four hundred twenty million, five hundred eighty-four thousand, four hundred twenty-three".