420203543 has 8 divisors (see below), whose sum is σ = 434219136. Its totient is φ = 406216800.

The previous prime is 420203479. The next prime is 420203579. The reversal of 420203543 is 345302024.

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 420203543 - 2⁶ = 420203479 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 (420203593) 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, 24713 + ... + 38093.

It is an arithmetic number, because the mean of its divisors is an integer number (54277392).

Almost surely, 2^420203543 is an apocalyptic number.

420203543 is a deficient number, since it is larger than the sum of its proper divisors (14015593).

420203543 is a wasteful number, since it uses less digits than its factorization.

420203543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14425.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 420203543 is about 20498.8668711224. The cubic root of 420203543 is about 749.0081959741.

Adding to 420203543 its reverse (345302024), we get a palindrome (765505567).

The spelling of 420203543 in words is "four hundred twenty million, two hundred three thousand, five hundred forty-three".