420334424 has 8 divisors (see below), whose sum is σ = 788127060. Its totient is φ = 210167208.

The previous prime is 420334403. The next prime is 420334429. The reversal of 420334424 is 424433024.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 420334393 and 420334402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420334429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26270894 + ... + 26270909.

Almost surely, 2^420334424 is an apocalyptic number.

It is an amenable number.

420334424 is a deficient number, since it is larger than the sum of its proper divisors (367792636).

420334424 is a wasteful number, since it uses less digits than its factorization.

420334424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52541809 (or 52541805 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 420334424 is about 20502.0590185474. The cubic root of 420334424 is about 749.0859525496.

Adding to 420334424 its reverse (424433024), we get a palindrome (844767448).

The spelling of 420334424 in words is "four hundred twenty million, three hundred thirty-four thousand, four hundred twenty-four".