420546555 has 48 divisors (see below), whose sum is σ = 856398816. Its totient is φ = 188213760.

The previous prime is 420546547. The next prime is 420546569. The reversal of 420546555 is 555645024.

It is not a de Polignac number, because 420546555 - 2³ = 420546547 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26242 + ... + 39111.

It is an arithmetic number, because the mean of its divisors is an integer number (17841642).

Almost surely, 2^420546555 is an apocalyptic number.

420546555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

420546555 is an abundant number, since it is smaller than the sum of its proper divisors (435852261).

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

420546555 is a wasteful number, since it uses less digits than its factorization.

420546555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65388 (or 65385 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 420546555 is about 20507.2317732063. The cubic root of 420546555 is about 749.2119455837.

The spelling of 420546555 in words is "four hundred twenty million, five hundred forty-six thousand, five hundred fifty-five".