421218850 has 24 divisors (see below), whose sum is σ = 843735060. Its totient is φ = 155526720.

The previous prime is 421218839. The next prime is 421218859. The reversal of 421218850 is 58812124.

It can be written as a sum of positive squares in 6 ways, for example, as 232898121 + 188320729 = 15261^2 + 13723^2 .

It is not an unprimeable number, because it can be changed into a prime (421218859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 323365 + ... + 324664.

Almost surely, 2^421218850 is an apocalyptic number.

421218850 is an abundant number, since it is smaller than the sum of its proper divisors (422516210).

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

421218850 is a wasteful number, since it uses less digits than its factorization.

421218850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648054 (or 648049 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 421218850 is about 20523.6168839705. The cubic root of 421218850 is about 749.6109686114.

The spelling of 421218850 in words is "four hundred twenty-one million, two hundred eighteen thousand, eight hundred fifty".