420564498 has 8 divisors (see below), whose sum is σ = 841129008. Its totient is φ = 140188164.

The previous prime is 420564497. The next prime is 420564503. The reversal of 420564498 is 894465024.

It is a sphenic number, since it is the product of 3 distinct primes.

420564498 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420564491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35047036 + ... + 35047047.

It is an arithmetic number, because the mean of its divisors is an integer number (105141126).

Almost surely, 2^420564498 is an apocalyptic number.

420564498 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

420564498 is a wasteful number, since it uses less digits than its factorization.

420564498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70094088.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 420564498 is about 20507.6692483568. The cubic root of 420564498 is about 749.2226007011. Note that the first 3 decimals are identical.

The spelling of 420564498 in words is "four hundred twenty million, five hundred sixty-four thousand, four hundred ninety-eight".