421154220 has 48 divisors (see below), whose sum is σ = 1217276928. Its totient is φ = 108684480.

The previous prime is 421154207. The next prime is 421154231. The reversal of 421154220 is 22451124.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111354 + ... + 115073.

It is an arithmetic number, because the mean of its divisors is an integer number (25359936).

Almost surely, 2^421154220 is an apocalyptic number.

It is an amenable number.

421154220 is an abundant number, since it is smaller than the sum of its proper divisors (796122708).

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

421154220 is a wasteful number, since it uses less digits than its factorization.

421154220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226470 (or 226468 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 421154220 is about 20522.0422960289. The cubic root of 421154220 is about 749.5726276278.

The spelling of 421154220 in words is "four hundred twenty-one million, one hundred fifty-four thousand, two hundred twenty".