421305207 has 8 divisors (see below), whose sum is σ = 562677360. Its totient is φ = 280401600.

The previous prime is 421305197. The next prime is 421305211. The reversal of 421305207 is 702503124.

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

It is not a de Polignac number, because 421305207 - 2²⁸ = 152869751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421305307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115032 + ... + 118637.

It is an arithmetic number, because the mean of its divisors is an integer number (70334670).

Almost surely, 2^421305207 is an apocalyptic number.

421305207 is a deficient number, since it is larger than the sum of its proper divisors (141372153).

421305207 is a wasteful number, since it uses less digits than its factorization.

421305207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234273.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 421305207 is about 20525.7206207236. The cubic root of 421305207 is about 749.6621927601.

The spelling of 421305207 in words is "four hundred twenty-one million, three hundred five thousand, two hundred seven".