421268305 has 8 divisors (see below), whose sum is σ = 505693800. Its totient is φ = 336900096.

The previous prime is 421268293. The next prime is 421268339. The reversal of 421268305 is 503862124.

It can be written as a sum of positive squares in 4 ways, for example, as 41525136 + 379743169 = 6444^2 + 19487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421268305 - 2¹³ = 421260113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3991 + ... + 29299.

It is an arithmetic number, because the mean of its divisors is an integer number (63211725).

Almost surely, 2^421268305 is an apocalyptic number.

It is an amenable number.

421268305 is a deficient number, since it is larger than the sum of its proper divisors (84425495).

421268305 is a wasteful number, since it uses less digits than its factorization.

421268305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28643.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 421268305 is about 20524.8216801024. The cubic root of 421268305 is about 749.6403045569.

The spelling of 421268305 in words is "four hundred twenty-one million, two hundred sixty-eight thousand, three hundred five".