420340024 has 16 divisors (see below), whose sum is σ = 848763720. Its totient is φ = 194003040.

The previous prime is 420339991. The next prime is 420340043. The reversal of 420340024 is 420043024.

It is a junction number, because it is equal to n+sod(n) for n = 420339983 and 420340010.

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 3 ways as a sum of consecutive naturals, for example, 2020762 + ... + 2020969.

Almost surely, 2^420340024 is an apocalyptic number.

It is an amenable number.

420340024 is an abundant number, since it is smaller than the sum of its proper divisors (428423696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420340024 is a wasteful number, since it uses less digits than its factorization.

420340024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041750 (or 4041746 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 420340024 is about 20502.1955897411. The cubic root of 420340024 is about 749.0892791569.

Adding to 420340024 its reverse (420043024), we get a palindrome (840383048).

The spelling of 420340024 in words is "four hundred twenty million, three hundred forty thousand, twenty-four".