420562405 has 16 divisors (see below), whose sum is σ = 538583040. Its totient is φ = 314157312.

The previous prime is 420562391. The next prime is 420562423. The reversal of 420562405 is 504265024.

It is a cyclic number.

It is not a de Polignac number, because 420562405 - 2⁹ = 420561893 is a prime.

It is a super-3 number, since 3×420562405³ (a number of 27 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 8685 + ... + 30274.

It is an arithmetic number, because the mean of its divisors is an integer number (33661440).

Almost surely, 2^420562405 is an apocalyptic number.

It is an amenable number.

420562405 is a deficient number, since it is larger than the sum of its proper divisors (118020635).

420562405 is a wasteful number, since it uses less digits than its factorization.

420562405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39108.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 420562405 is about 20507.6182186035. The cubic root of 420562405 is about 749.2213578275.

The spelling of 420562405 in words is "four hundred twenty million, five hundred sixty-two thousand, four hundred five".