421042068 has 144 divisors (see below), whose sum is σ = 1150269120. Its totient is φ = 129604608.

The previous prime is 421042051. The next prime is 421042081. The reversal of 421042068 is 860240124.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 3725980 + ... + 3726092.

It is an arithmetic number, because the mean of its divisors is an integer number (7987980).

Almost surely, 2^421042068 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 421042068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575134560).

421042068 is an abundant number, since it is smaller than the sum of its proper divisors (729227052).

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

421042068 is a wasteful number, since it uses less digits than its factorization.

421042068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 421042068 is about 20519.3096375097. The cubic root of 421042068 is about 749.5060854693.

The spelling of 421042068 in words is "four hundred twenty-one million, forty-two thousand, sixty-eight".