420482305 has 4 divisors (see below), whose sum is σ = 504578772. Its totient is φ = 336385840.

The previous prime is 420482303. The next prime is 420482323. The reversal of 420482305 is 503284024.

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 293334129 + 127148176 = 17127^2 + 11276^2 .

It is not a de Polignac number, because 420482305 - 2¹ = 420482303 is a prime.

It is a super-2 number, since 2×420482305² = 353610737636226050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420482303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42048226 + ... + 42048235.

It is an arithmetic number, because the mean of its divisors is an integer number (126144693).

Almost surely, 2^420482305 is an apocalyptic number.

It is an amenable number.

420482305 is a deficient number, since it is larger than the sum of its proper divisors (84096467).

420482305 is an equidigital number, since it uses as much as digits as its factorization.

420482305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84096466.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 420482305 is about 20505.6651928193. The cubic root of 420482305 is about 749.1737894283.

The spelling of 420482305 in words is "four hundred twenty million, four hundred eighty-two thousand, three hundred five".