100420216 has 32 divisors (see below), whose sum is σ = 203862960. Its totient is φ = 46098432.

The previous prime is 100420181. The next prime is 100420217. The reversal of 100420216 is 612024001.

It is a self number, because there is not a number n which added to its sum of digits gives 100420216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100420217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17571 + ... + 22573.

Almost surely, 2^100420216 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 100420216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101931480).

100420216 is an abundant number, since it is smaller than the sum of its proper divisors (103442744).

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

100420216 is a wasteful number, since it uses less digits than its factorization.

100420216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5215 (or 5211 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 100420216 is about 10020.9887735692. The cubic root of 100420216 is about 464.8081314251.

Adding to 100420216 its reverse (612024001), we get a palindrome (712444217).

The spelling of 100420216 in words is "one hundred million, four hundred twenty thousand, two hundred sixteen".