420486771 has 4 divisors (see below), whose sum is σ = 560649032. Its totient is φ = 280324512.

The previous prime is 420486757. The next prime is 420486799. The reversal of 420486771 is 177684024.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 420486771 - 2¹⁸ = 420224627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420486071) 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 3 ways as a sum of consecutive naturals, for example, 70081126 + ... + 70081131.

It is an arithmetic number, because the mean of its divisors is an integer number (140162258).

Almost surely, 2^420486771 is an apocalyptic number.

420486771 is a deficient number, since it is larger than the sum of its proper divisors (140162261).

420486771 is a wasteful number, since it uses less digits than its factorization.

420486771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140162260.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 420486771 is about 20505.7740892657. The cubic root of 420486771 is about 749.1764417779.

The spelling of 420486771 in words is "four hundred twenty million, four hundred eighty-six thousand, seven hundred seventy-one".