422100400 has 30 divisors (see below), whose sum is σ = 1014097172. Its totient is φ = 168840000.

The previous prime is 422100391. The next prime is 422100473. The reversal of 422100400 is 4001224.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 527226 + ... + 528025.

Almost surely, 2^422100400 is an apocalyptic number.

422100400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422100400 is an abundant number, since it is smaller than the sum of its proper divisors (591996772).

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

422100400 is a wasteful number, since it uses less digits than its factorization.

422100400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055269 (or 1055258 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 422100400 is about 20545.0821366088. The cubic root of 422100400 is about 750.1335465894.

Adding to 422100400 its reverse (4001224), we get a palindrome (426101624).

It can be divided in two parts, 422100 and 400, that added together give a square (422500 = 650²).

The spelling of 422100400 in words is "four hundred twenty-two million, one hundred thousand, four hundred".