421220968 has 64 divisors (see below), whose sum is σ = 959644800. Its totient is φ = 169793280.

The previous prime is 421220959. The next prime is 421220981. The reversal of 421220968 is 869022124.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274363 + ... + 275893.

It is an arithmetic number, because the mean of its divisors is an integer number (14994450).

Almost surely, 2^421220968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421220968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479822400).

421220968 is an abundant number, since it is smaller than the sum of its proper divisors (538423832).

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

421220968 is a wasteful number, since it uses less digits than its factorization.

421220968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 421220968 is about 20523.6684829979. The cubic root of 421220968 is about 749.6122250235.

The spelling of 421220968 in words is "four hundred twenty-one million, two hundred twenty thousand, nine hundred sixty-eight".