420520205807 has 8 divisors (see below), whose sum is σ = 472557823584. Its totient is φ = 371295432288.

The previous prime is 420520205803. The next prime is 420520205857. The reversal of 420520205807 is 708502025024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420520205807 - 2² = 420520205803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420520205803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703210748 + ... + 703211345.

It is an arithmetic number, because the mean of its divisors is an integer number (59069727948).

Almost surely, 2^420520205807 is an apocalyptic number.

420520205807 is a deficient number, since it is larger than the sum of its proper divisors (52037617777).

420520205807 is a wasteful number, since it uses less digits than its factorization.

420520205807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406422129.

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 420520205807 in words is "four hundred twenty billion, five hundred twenty million, two hundred five thousand, eight hundred seven".