42421100 has 36 divisors (see below), whose sum is σ = 92577408. Its totient is φ = 16872000.

The previous prime is 42421087. The next prime is 42421121. The reversal of 42421100 is 112424.

42421100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 17990 + ... + 20210.

Almost surely, 2^42421100 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 42421100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46288704).

42421100 is an abundant number, since it is smaller than the sum of its proper divisors (50156308).

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

42421100 is a wasteful number, since it uses less digits than its factorization.

42421100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 42421100 is about 6513.1482402906. The cubic root of 42421100 is about 348.7605136367.

Adding to 42421100 its reverse (112424), we get a palindrome (42533524).

The spelling of 42421100 in words is "forty-two million, four hundred twenty-one thousand, one hundred".