421463305 has 4 divisors (see below), whose sum is σ = 505755972. Its totient is φ = 337170640.

The previous prime is 421463249. The next prime is 421463309. The reversal of 421463305 is 503364124.

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 47775744 + 373687561 = 6912^2 + 19331^2 .

It is not a de Polignac number, because 421463305 - 2¹⁹ = 420939017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421463309) 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, 42146326 + ... + 42146335.

It is an arithmetic number, because the mean of its divisors is an integer number (126438993).

Almost surely, 2^421463305 is an apocalyptic number.

It is an amenable number.

421463305 is a deficient number, since it is larger than the sum of its proper divisors (84292667).

421463305 is an equidigital number, since it uses as much as digits as its factorization.

421463305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84292666.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 421463305 is about 20529.5714762876. The cubic root of 421463305 is about 749.7559531894.

It can be divided in two parts, 42146 and 3305, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 421463305 in words is "four hundred twenty-one million, four hundred sixty-three thousand, three hundred five".