423521375 has 8 divisors (see below), whose sum is σ = 528554832. Its totient is φ = 338817000.

The previous prime is 423521347. The next prime is 423521383. The reversal of 423521375 is 573125324.

It is not a de Polignac number, because 423521375 - 2⁶ = 423521311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693961 + ... + 1694210.

It is an arithmetic number, because the mean of its divisors is an integer number (66069354).

Almost surely, 2^423521375 is an apocalyptic number.

423521375 is a deficient number, since it is larger than the sum of its proper divisors (105033457).

423521375 is an equidigital number, since it uses as much as digits as its factorization.

423521375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388186 (or 3388176 counting only the distinct ones).

The product of its digits is 25200, while the sum is 32.

The square root of 423521375 is about 20579.6349578898. The cubic root of 423521375 is about 750.9743632365.

Adding to 423521375 its reverse (573125324), we get a palindrome (996646699).

The spelling of 423521375 in words is "four hundred twenty-three million, five hundred twenty-one thousand, three hundred seventy-five".