420064554 has 80 divisors (see below), whose sum is σ = 1055954592. Its totient is φ = 110736864.

The previous prime is 420064537. The next prime is 420064609. The reversal of 420064554 is 455460024.

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 39 ways as a sum of consecutive naturals, for example, 186157 + ... + 188399.

Almost surely, 2^420064554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420064554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527977296).

420064554 is an abundant number, since it is smaller than the sum of its proper divisors (635890038).

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

420064554 is a wasteful number, since it uses less digits than its factorization.

420064554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289 (or 2268 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 420064554 is about 20495.4764277389. The cubic root of 420064554 is about 748.9256047458.

The spelling of 420064554 in words is "four hundred twenty million, sixty-four thousand, five hundred fifty-four".