420752555 has 8 divisors (see below), whose sum is σ = 506916144. Its totient is φ = 335260000.

The previous prime is 420752539. The next prime is 420752557. The reversal of 420752555 is 555257024.

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

It is not a de Polignac number, because 420752555 - 2⁴ = 420752539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420752557) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 166376 + ... + 168885.

It is an arithmetic number, because the mean of its divisors is an integer number (63364518).

Almost surely, 2^420752555 is an apocalyptic number.

420752555 is a deficient number, since it is larger than the sum of its proper divisors (86163589).

420752555 is a wasteful number, since it uses less digits than its factorization.

420752555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335517.

The product of its (nonzero) digits is 70000, while the sum is 35.

The square root of 420752555 is about 20512.2537767063. The cubic root of 420752555 is about 749.3342566299.

The spelling of 420752555 in words is "four hundred twenty million, seven hundred fifty-two thousand, five hundred fifty-five".