421691852 has 24 divisors (see below), whose sum is σ = 777537600. Its totient is φ = 199559376.

The previous prime is 421691843. The next prime is 421691857. The reversal of 421691852 is 258196124.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (421691857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108983 + ... + 112785.

It is an arithmetic number, because the mean of its divisors is an integer number (32397400).

Almost surely, 2^421691852 is an apocalyptic number.

It is an amenable number.

421691852 is a deficient number, since it is larger than the sum of its proper divisors (355845748).

421691852 is a wasteful number, since it uses less digits than its factorization.

421691852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285 (or 5283 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 421691852 is about 20535.1370095259. The cubic root of 421691852 is about 749.8914521424.

The spelling of 421691852 in words is "four hundred twenty-one million, six hundred ninety-one thousand, eight hundred fifty-two".