421516868 has 12 divisors (see below), whose sum is σ = 753349632. Its totient is φ = 206274120.

The previous prime is 421516867. The next prime is 421516871. The reversal of 421516868 is 868615124.

It is not an unprimeable number, because it can be changed into a prime (421516861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120868 + ... + 1121243.

It is an arithmetic number, because the mean of its divisors is an integer number (62779136).

Almost surely, 2^421516868 is an apocalyptic number.

It is an amenable number.

421516868 is a deficient number, since it is larger than the sum of its proper divisors (331832764).

421516868 is a wasteful number, since it uses less digits than its factorization.

421516868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242162 (or 2242160 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 421516868 is about 20530.8759676737. The cubic root of 421516868 is about 749.7877135479.

The spelling of 421516868 in words is "four hundred twenty-one million, five hundred sixteen thousand, eight hundred sixty-eight".