423032440 has 32 divisors (see below), whose sum is σ = 961256160. Its totient is φ = 167536000.

The previous prime is 423032431. The next prime is 423032447. The reversal of 423032440 is 44230324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423032447) 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, 48316 + ... + 56395.

It is an arithmetic number, because the mean of its divisors is an integer number (30039255).

Almost surely, 2^423032440 is an apocalyptic number.

423032440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423032440 is an abundant number, since it is smaller than the sum of its proper divisors (538223720).

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

423032440 is a wasteful number, since it uses less digits than its factorization.

423032440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104823 (or 104819 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 423032440 is about 20567.7524294708. The cubic root of 423032440 is about 750.6852640639.

Adding to 423032440 its reverse (44230324), we get a palindrome (467262764).

The spelling of 423032440 in words is "four hundred twenty-three million, thirty-two thousand, four hundred forty".