420424424 has 16 divisors (see below), whose sum is σ = 900909600. Its totient is φ = 180181872.

The previous prime is 420424421. The next prime is 420424469. The reversal of 420424424 is 424424024.

It is a junction number, because it is equal to n+sod(n) for n = 420424393 and 420424402.

It is not an unprimeable number, because it can be changed into a prime (420424421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3753734 + ... + 3753845.

It is an arithmetic number, because the mean of its divisors is an integer number (56306850).

Almost surely, 2^420424424 is an apocalyptic number.

It is an amenable number.

420424424 is an abundant number, since it is smaller than the sum of its proper divisors (480485176).

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

420424424 is a wasteful number, since it uses less digits than its factorization.

420424424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7507592 (or 7507588 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 420424424 is about 20504.2538025650. The cubic root of 420424424 is about 749.1394123035.

Adding to 420424424 its reverse (424424024), we get a palindrome (844848448).

The spelling of 420424424 in words is "four hundred twenty million, four hundred twenty-four thousand, four hundred twenty-four".