478642543 has 2 divisors, whose sum is σ = 478642544. Its totient is φ = 478642542.

The previous prime is 478642537. The next prime is 478642583. The reversal of 478642543 is 345246874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478642543 - 2¹⁷ = 478511471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478642543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478642513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239321271 + 239321272.

It is an arithmetic number, because the mean of its divisors is an integer number (239321272).

Almost surely, 2^478642543 is an apocalyptic number.

478642543 is a deficient number, since it is larger than the sum of its proper divisors (1).

478642543 is an equidigital number, since it uses as much as digits as its factorization.

478642543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 43.

The square root of 478642543 is about 21877.9007905238. The cubic root of 478642543 is about 782.2347390654.

The spelling of 478642543 in words is "four hundred seventy-eight million, six hundred forty-two thousand, five hundred forty-three".