421108285 has 24 divisors (see below), whose sum is σ = 562022280. Its totient is φ = 302545152.

The previous prime is 421108283. The next prime is 421108339. The reversal of 421108285 is 582801124.

It can be written as a sum of positive squares in 12 ways, for example, as 118243876 + 302864409 = 10874^2 + 17403^2 .

It is not a de Polignac number, because 421108285 - 2¹ = 421108283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421108283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24531 + ... + 37999.

It is an arithmetic number, because the mean of its divisors is an integer number (23417595).

Almost surely, 2^421108285 is an apocalyptic number.

It is an amenable number.

421108285 is a deficient number, since it is larger than the sum of its proper divisors (140913995).

421108285 is a wasteful number, since it uses less digits than its factorization.

421108285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13537 (or 13524 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 421108285 is about 20520.9231030185. The cubic root of 421108285 is about 749.5453748473.

The spelling of 421108285 in words is "four hundred twenty-one million, one hundred eight thousand, two hundred eighty-five".