421100522 has 8 divisors (see below), whose sum is σ = 635890500. Its totient is φ = 209137024.

The previous prime is 421100521. The next prime is 421100527. The reversal of 421100522 is 225001124.

It can be written as a sum of positive squares in 2 ways, for example, as 354531241 + 66569281 = 18829^2 + 8159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 421100522.

It is not an unprimeable number, because it can be changed into a prime (421100521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706247 + ... + 706842.

Almost surely, 2^421100522 is an apocalyptic number.

421100522 is a deficient number, since it is larger than the sum of its proper divisors (214789978).

421100522 is a wasteful number, since it uses less digits than its factorization.

421100522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413240.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 421100522 is about 20520.7339537357. The cubic root of 421100522 is about 749.5407689406.

Adding to 421100522 its reverse (225001124), we get a palindrome (646101646).

The spelling of 421100522 in words is "four hundred twenty-one million, one hundred thousand, five hundred twenty-two".