420271863 has 32 divisors (see below), whose sum is σ = 635919360. Its totient is φ = 244632960.

The previous prime is 420271837. The next prime is 420271889. The reversal of 420271863 is 368172024.

It is an interprime number because it is at equal distance from previous prime (420271837) and next prime (420271889).

It is not a de Polignac number, because 420271863 - 2¹⁰ = 420270839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420271823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94281 + ... + 98637.

It is an arithmetic number, because the mean of its divisors is an integer number (19872480).

Almost surely, 2^420271863 is an apocalyptic number.

420271863 is a deficient number, since it is larger than the sum of its proper divisors (215647497).

420271863 is a wasteful number, since it uses less digits than its factorization.

420271863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 420271863 is about 20500.5332369673. The cubic root of 420271863 is about 749.0487869907.

The spelling of 420271863 in words is "four hundred twenty million, two hundred seventy-one thousand, eight hundred sixty-three".