420802755 has 16 divisors (see below), whose sum is σ = 675972864. Its totient is φ = 223532000.

The previous prime is 420802727. The next prime is 420802757. The reversal of 420802755 is 557208024.

It is not a de Polignac number, because 420802755 - 2¹⁷ = 420671683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420802757) 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 15 ways as a sum of consecutive naturals, for example, 52119 + ... + 59648.

It is an arithmetic number, because the mean of its divisors is an integer number (42248304).

Almost surely, 2^420802755 is an apocalyptic number.

420802755 is a deficient number, since it is larger than the sum of its proper divisors (255170109).

420802755 is a wasteful number, since it uses less digits than its factorization.

420802755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112026.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 420802755 is about 20513.4773990175. The cubic root of 420802755 is about 749.3640564757.

The spelling of 420802755 in words is "four hundred twenty million, eight hundred two thousand, seven hundred fifty-five".