423432045 has 24 divisors (see below), whose sum is σ = 759259800. Its totient is φ = 218042496.

The previous prime is 423432041. The next prime is 423432059. The reversal of 423432045 is 540234324.

It can be written as a sum of positive squares in 4 ways, for example, as 60186564 + 363245481 = 7758^2 + 19059^2 .

It is not a de Polignac number, because 423432045 - 2² = 423432041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423432041) 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 23 ways as a sum of consecutive naturals, for example, 160930 + ... + 163539.

It is an arithmetic number, because the mean of its divisors is an integer number (31635825).

Almost surely, 2^423432045 is an apocalyptic number.

423432045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423432045 is a deficient number, since it is larger than the sum of its proper divisors (335827755).

423432045 is a wasteful number, since it uses less digits than its factorization.

423432045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324509 (or 324506 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 423432045 is about 20577.4644939555. The cubic root of 423432045 is about 750.9215605045.

Adding to 423432045 its reverse (540234324), we get a palindrome (963666369).

The spelling of 423432045 in words is "four hundred twenty-three million, four hundred thirty-two thousand, forty-five".