420448231 has 8 divisors (see below), whose sum is σ = 483461504. Its totient is φ = 358172280.

The previous prime is 420448213. The next prime is 420448247. The reversal of 420448231 is 132844024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 420448231 - 2⁷ = 420448103 is a prime.

It is a super-2 number, since 2×420448231² = 353553429902058722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420448231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420448331) 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 7 ways as a sum of consecutive naturals, for example, 183105 + ... + 185386.

It is an arithmetic number, because the mean of its divisors is an integer number (60432688).

Almost surely, 2^420448231 is an apocalyptic number.

420448231 is a deficient number, since it is larger than the sum of its proper divisors (63013273).

420448231 is a wasteful number, since it uses less digits than its factorization.

420448231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368661.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 420448231 is about 20504.8343324202. The cubic root of 420448231 is about 749.1535523204.

The spelling of 420448231 in words is "four hundred twenty million, four hundred forty-eight thousand, two hundred thirty-one".