420424455 has 64 divisors (see below), whose sum is σ = 778014720. Its totient is φ = 191923200.

The previous prime is 420424421. The next prime is 420424469. The reversal of 420424455 is 554424024.

It is not a de Polignac number, because 420424455 - 2⁶ = 420424391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 195114 + ... + 197256.

It is an arithmetic number, because the mean of its divisors is an integer number (12156480).

Almost surely, 2^420424455 is an apocalyptic number.

420424455 is a deficient number, since it is larger than the sum of its proper divisors (357590265).

420424455 is a wasteful number, since it uses less digits than its factorization.

420424455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232.

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 420424455 is about 20504.2545585057. The cubic root of 420424455 is about 749.1394307161.

Adding to 420424455 its reverse (554424024), we get a palindrome (974848479).

The spelling of 420424455 in words is "four hundred twenty million, four hundred twenty-four thousand, four hundred fifty-five".