421190208 has 42 divisors (see below), whose sum is σ = 1207267334. Its totient is φ = 140396544.

The previous prime is 421190183. The next prime is 421190213. The reversal of 421190208 is 802091124.

It can be written as a sum of positive squares in only one way, i.e., 418120704 + 3069504 = 20448^2 + 1752^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 365041 + ... + 366192.

Almost surely, 2^421190208 is an apocalyptic number.

421190208 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

421190208 is an abundant number, since it is smaller than the sum of its proper divisors (786077126).

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

421190208 is a wasteful number, since it uses less digits than its factorization.

421190208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731251 (or 731238 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 421190208 is about 20522.9190906167. The cubic root of 421190208 is about 749.5939775674.

The spelling of 421190208 in words is "four hundred twenty-one million, one hundred ninety thousand, two hundred eight".