423016543 has 4 divisors (see below), whose sum is σ = 424880280. Its totient is φ = 421152808.

The previous prime is 423016541. The next prime is 423016547. The reversal of 423016543 is 345610324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423016543 - 2¹ = 423016541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423016541) 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 3 ways as a sum of consecutive naturals, for example, 931528 + ... + 931981.

It is an arithmetic number, because the mean of its divisors is an integer number (106220070).

Almost surely, 2^423016543 is an apocalyptic number.

423016543 is a deficient number, since it is larger than the sum of its proper divisors (1863737).

423016543 is a wasteful number, since it uses less digits than its factorization.

423016543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863736.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 423016543 is about 20567.3659713635. The cubic root of 423016543 is about 750.6758606927.

Adding to 423016543 its reverse (345610324), we get a palindrome (768626867).

The spelling of 423016543 in words is "four hundred twenty-three million, sixteen thousand, five hundred forty-three".