420332724 has 72 divisors (see below), whose sum is σ = 1216313280. Its totient is φ = 119895552.

The previous prime is 420332723. The next prime is 420332747. The reversal of 420332724 is 427233024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420332723) 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 23 ways as a sum of consecutive naturals, for example, 221572 + ... + 223460.

It is an arithmetic number, because the mean of its divisors is an integer number (16893240).

Almost surely, 2^420332724 is an apocalyptic number.

It is an amenable number.

420332724 is an abundant number, since it is smaller than the sum of its proper divisors (795980556).

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

420332724 is a wasteful number, since it uses less digits than its factorization.

420332724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789 (or 2784 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 420332724 is about 20502.0175592550. The cubic root of 420332724 is about 749.0849426809.

Adding to 420332724 its reverse (427233024), we get a palindrome (847565748).

The spelling of 420332724 in words is "four hundred twenty million, three hundred thirty-two thousand, seven hundred twenty-four".