420956205 has 32 divisors (see below), whose sum is σ = 695692800. Its totient is φ = 217231872.

The previous prime is 420956167. The next prime is 420956213. The reversal of 420956205 is 502659024.

It is not a de Polignac number, because 420956205 - 2⁸ = 420955949 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59391 + ... + 66099.

It is an arithmetic number, because the mean of its divisors is an integer number (21740400).

Almost surely, 2^420956205 is an apocalyptic number.

It is an amenable number.

420956205 is a deficient number, since it is larger than the sum of its proper divisors (274736595).

420956205 is a wasteful number, since it uses less digits than its factorization.

420956205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6853.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 420956205 is about 20517.2172820780. The cubic root of 420956205 is about 749.4551331449.

The spelling of 420956205 in words is "four hundred twenty million, nine hundred fifty-six thousand, two hundred five".