420634005 has 64 divisors (see below), whose sum is σ = 770826240. Its totient is φ = 193881600.

The previous prime is 420633971. The next prime is 420634021. The reversal of 420634005 is 500436024.

It is not a de Polignac number, because 420634005 - 2¹¹ = 420631957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1028241 + ... + 1028649.

It is an arithmetic number, because the mean of its divisors is an integer number (12044160).

Almost surely, 2^420634005 is an apocalyptic number.

It is an amenable number.

420634005 is a deficient number, since it is larger than the sum of its proper divisors (350192235).

420634005 is a wasteful number, since it uses less digits than its factorization.

420634005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 420634005 is about 20509.3638370379. The cubic root of 420634005 is about 749.2638732819.

The spelling of 420634005 in words is "four hundred twenty million, six hundred thirty-four thousand, five".