420502543 has 8 divisors (see below), whose sum is σ = 426202880. Its totient is φ = 414811800.

The previous prime is 420502517. The next prime is 420502549. The reversal of 420502543 is 345205024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420502543 - 2²¹ = 418405391 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 (420502549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146068 + ... + 148918.

It is an arithmetic number, because the mean of its divisors is an integer number (53275360).

Almost surely, 2^420502543 is an apocalyptic number.

420502543 is a deficient number, since it is larger than the sum of its proper divisors (5700337).

420502543 is a wasteful number, since it uses less digits than its factorization.

420502543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 420502543 is about 20506.1586602659. The cubic root of 420502543 is about 749.1858085911.

Adding to 420502543 its reverse (345205024), we get a palindrome (765707567).

The spelling of 420502543 in words is "four hundred twenty million, five hundred two thousand, five hundred forty-three".