420231064 has 48 divisors (see below), whose sum is σ = 882524160. Its totient is φ = 187387200.

The previous prime is 420231061. The next prime is 420231103. The reversal of 420231064 is 460132024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420231061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47209 + ... + 55399.

It is an arithmetic number, because the mean of its divisors is an integer number (18385920).

Almost surely, 2^420231064 is an apocalyptic number.

420231064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420231064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441262080).

420231064 is an abundant number, since it is smaller than the sum of its proper divisors (462293096).

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

420231064 is a wasteful number, since it uses less digits than its factorization.

420231064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272 (or 8257 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 420231064 is about 20499.5381411387. The cubic root of 420231064 is about 749.0245475771.

Adding to 420231064 its reverse (460132024), we get a palindrome (880363088).

The spelling of 420231064 in words is "four hundred twenty million, two hundred thirty-one thousand, sixty-four".