421442880 has 112 divisors (see below), whose sum is σ = 1355262720. Its totient is φ = 110942208.

The previous prime is 421442873. The next prime is 421442897. The reversal of 421442880 is 88244124.

It is a super-2 number, since 2×421442880² = 355228202205388800, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 73062 + ... + 78618.

It is an arithmetic number, because the mean of its divisors is an integer number (12100560).

Almost surely, 2^421442880 is an apocalyptic number.

421442880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421442880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677631360).

421442880 is an abundant number, since it is smaller than the sum of its proper divisors (933819840).

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

421442880 is a wasteful number, since it uses less digits than its factorization.

421442880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5656 (or 5646 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 33.

The square root of 421442880 is about 20529.0740171105. The cubic root of 421442880 is about 749.7438414092.

The spelling of 421442880 in words is "four hundred twenty-one million, four hundred forty-two thousand, eight hundred eighty".