423504045 has 24 divisors (see below), whose sum is σ = 761263776. Its totient is φ = 225868176.

The previous prime is 423504019. The next prime is 423504061. The reversal of 423504045 is 540405324.

It is not a de Polignac number, because 423504045 - 2⁷ = 423503917 is a prime.

It is a super-2 number, since 2×423504045² = 358711352262724050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173067 + ... + 175496.

It is an arithmetic number, because the mean of its divisors is an integer number (31719324).

Almost surely, 2^423504045 is an apocalyptic number.

423504045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423504045 is a deficient number, since it is larger than the sum of its proper divisors (337759731).

423504045 is an equidigital number, since it uses as much as digits as its factorization.

423504045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348583 (or 348571 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 423504045 is about 20579.2139062696. The cubic root of 423504045 is about 750.9641200988.

Adding to 423504045 its reverse (540405324), we get a palindrome (963909369).

The spelling of 423504045 in words is "four hundred twenty-three million, five hundred four thousand, forty-five".