420537405 has 16 divisors (see below), whose sum is σ = 702115200. Its totient is φ = 214534848.

The previous prime is 420537401. The next prime is 420537407. The reversal of 420537405 is 504735024.

It is not a de Polignac number, because 420537405 - 2² = 420537401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420537401) by changing a digit.

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, 609130 + ... + 609819.

It is an arithmetic number, because the mean of its divisors is an integer number (43882200).

Almost surely, 2^420537405 is an apocalyptic number.

It is an amenable number.

420537405 is a deficient number, since it is larger than the sum of its proper divisors (281577795).

420537405 is a wasteful number, since it uses less digits than its factorization.

420537405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218980.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 420537405 is about 20507.0086799611. The cubic root of 420537405 is about 749.2065119094.

The spelling of 420537405 in words is "four hundred twenty million, five hundred thirty-seven thousand, four hundred five".