421630266 has 16 divisors (see below), whose sum is σ = 843977088. Its totient is φ = 140424000.

The previous prime is 421630259. The next prime is 421630267. The reversal of 421630266 is 662036124.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421630267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22050 + ... + 36461.

It is an arithmetic number, because the mean of its divisors is an integer number (52748568).

Almost surely, 2^421630266 is an apocalyptic number.

421630266 is an abundant number, since it is smaller than the sum of its proper divisors (422346822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421630266 is a wasteful number, since it uses less digits than its factorization.

421630266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59717.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 421630266 is about 20533.6374274019. The cubic root of 421630266 is about 749.8549443914.

The spelling of 421630266 in words is "four hundred twenty-one million, six hundred thirty thousand, two hundred sixty-six".