420055000505 has 32 divisors (see below), whose sum is σ = 577326220800. Its totient is φ = 287413028352.

The previous prime is 420055000471. The next prime is 420055000507. The reversal of 420055000505 is 505000550024.

It is a cyclic number.

It is not a de Polignac number, because 420055000505 - 2¹⁶ = 420054934969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420055000507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32751524 + ... + 32764346.

It is an arithmetic number, because the mean of its divisors is an integer number (18041444400).

Almost surely, 2^420055000505 is an apocalyptic number.

It is an amenable number.

420055000505 is a deficient number, since it is larger than the sum of its proper divisors (157271220295).

420055000505 is a wasteful number, since it uses less digits than its factorization.

420055000505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14793.

The product of its (nonzero) digits is 5000, while the sum is 26.

Adding to 420055000505 its reverse (505000550024), we get a palindrome (925055550529).

The spelling of 420055000505 in words is "four hundred twenty billion, fifty-five million, five hundred five", and thus it is an aban number.