421106228 has 6 divisors (see below), whose sum is σ = 736935906. Its totient is φ = 210553112.

The previous prime is 421106221. The next prime is 421106239. The reversal of 421106228 is 822601124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 417058084 + 4048144 = 20422^2 + 2012^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421106197 and 421106206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421106221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52638275 + ... + 52638282.

It is an arithmetic number, because the mean of its divisors is an integer number (122822651).

Almost surely, 2^421106228 is an apocalyptic number.

It is an amenable number.

421106228 is a deficient number, since it is larger than the sum of its proper divisors (315829678).

421106228 is a wasteful number, since it uses less digits than its factorization.

421106228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105276561 (or 105276559 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 421106228 is about 20520.8729833796. The cubic root of 421106228 is about 749.5441544033.

The spelling of 421106228 in words is "four hundred twenty-one million, one hundred six thousand, two hundred twenty-eight".