420343032 has 64 divisors (see below), whose sum is σ = 1101185280. Its totient is φ = 133455872.

The previous prime is 420343019. The next prime is 420343039. The reversal of 420343032 is 230343024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420343039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140383 + ... + 143345.

It is an arithmetic number, because the mean of its divisors is an integer number (17206020).

Almost surely, 2^420343032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420343032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550592640).

420343032 is an abundant number, since it is smaller than the sum of its proper divisors (680842248).

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

420343032 is a wasteful number, since it uses less digits than its factorization.

420343032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252 (or 3248 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 420343032 is about 20502.2689476068. The cubic root of 420343032 is about 749.0910660081.

Adding to 420343032 its reverse (230343024), we get a palindrome (650686056).

The spelling of 420343032 in words is "four hundred twenty million, three hundred forty-three thousand, thirty-two".