420200523 has 24 divisors (see below), whose sum is σ = 640645200. Its totient is φ = 264665664.

The previous prime is 420200519. The next prime is 420200563. The reversal of 420200523 is 325002024.

It is not a de Polignac number, because 420200523 - 2² = 420200519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420200496 and 420200505.

It is not an unprimeable number, because it can be changed into a prime (420200563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63361 + ... + 69677.

It is an arithmetic number, because the mean of its divisors is an integer number (26693550).

Almost surely, 2^420200523 is an apocalyptic number.

420200523 is a deficient number, since it is larger than the sum of its proper divisors (220444677).

420200523 is a wasteful number, since it uses less digits than its factorization.

420200523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6731 (or 6728 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 420200523 is about 20498.7932083818. The cubic root of 420200523 is about 749.0064015976.

Adding to 420200523 its reverse (325002024), we get a palindrome (745202547).

The spelling of 420200523 in words is "four hundred twenty million, two hundred thousand, five hundred twenty-three".