420320511 has 12 divisors (see below), whose sum is σ = 653832088. Its totient is φ = 258658704.

The previous prime is 420320473. The next prime is 420320531. The reversal of 420320511 is 115023024.

It is not a de Polignac number, because 420320511 - 2¹¹ = 420318463 is a prime.

It is a super-2 number, since 2×420320511² = 353338663934602242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420320531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1796125 + ... + 1796358.

Almost surely, 2^420320511 is an apocalyptic number.

420320511 is a deficient number, since it is larger than the sum of its proper divisors (233511577).

420320511 is a wasteful number, since it uses less digits than its factorization.

420320511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592502 (or 3592499 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 420320511 is about 20501.7197083562. The cubic root of 420320511 is about 749.0776875847.

Adding to 420320511 its reverse (115023024), we get a palindrome (535343535).

The spelling of 420320511 in words is "four hundred twenty million, three hundred twenty thousand, five hundred eleven".