421214920 has 32 divisors (see below), whose sum is σ = 1083124800. Its totient is φ = 144416448.

The previous prime is 421214909. The next prime is 421214921. The reversal of 421214920 is 29412124.

It is not an unprimeable number, because it can be changed into a prime (421214921) 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, 751890 + ... + 752449.

It is an arithmetic number, because the mean of its divisors is an integer number (33847650).

Almost surely, 2^421214920 is an apocalyptic number.

421214920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421214920 is an abundant number, since it is smaller than the sum of its proper divisors (661909880).

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

421214920 is a wasteful number, since it uses less digits than its factorization.

421214920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504357 (or 1504353 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 421214920 is about 20523.5211403891. The cubic root of 421214920 is about 749.6086372973.

The spelling of 421214920 in words is "four hundred twenty-one million, two hundred fourteen thousand, nine hundred twenty".