420130385 has 4 divisors (see below), whose sum is σ = 504156468. Its totient is φ = 336104304.

The previous prime is 420130369. The next prime is 420130391. The reversal of 420130385 is 583031024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75359761 + 344770624 = 8681^2 + 18568^2 .

It is a cyclic number.

It is not a de Polignac number, because 420130385 - 2⁴ = 420130369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 42013034 + ... + 42013043.

It is an arithmetic number, because the mean of its divisors is an integer number (126039117).

Almost surely, 2^420130385 is an apocalyptic number.

It is an amenable number.

420130385 is a deficient number, since it is larger than the sum of its proper divisors (84026083).

420130385 is an equidigital number, since it uses as much as digits as its factorization.

420130385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84026082.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 420130385 is about 20497.0823533497. The cubic root of 420130385 is about 748.9647256744.

The spelling of 420130385 in words is "four hundred twenty million, one hundred thirty thousand, three hundred eighty-five".