420422100 has 72 divisors (see below), whose sum is σ = 1390202688. Its totient is φ = 96096000.

The previous prime is 420422089. The next prime is 420422113. The reversal of 420422100 is 1224024.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 420422100.

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 23 ways as a sum of consecutive naturals, for example, 98001 + ... + 102200.

Almost surely, 2^420422100 is an apocalyptic number.

It is an amenable number.

420422100 is an abundant number, since it is smaller than the sum of its proper divisors (969780588).

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

420422100 is a wasteful number, since it uses less digits than its factorization.

420422100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200225 (or 200218 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 420422100 is about 20504.1971313192. The cubic root of 420422100 is about 749.1380319498.

Adding to 420422100 its reverse (1224024), we get a palindrome (421646124).

The spelling of 420422100 in words is "four hundred twenty million, four hundred twenty-two thousand, one hundred".