420205233 has 24 divisors (see below), whose sum is σ = 655687872. Its totient is φ = 238665504.

The previous prime is 420205231. The next prime is 420205237. The reversal of 420205233 is 332502024.

It is not a de Polignac number, because 420205233 - 2¹ = 420205231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (420205231) 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, 15991 + ... + 33107.

It is an arithmetic number, because the mean of its divisors is an integer number (27320328).

Almost surely, 2^420205233 is an apocalyptic number.

It is an amenable number.

420205233 is a deficient number, since it is larger than the sum of its proper divisors (235482639).

420205233 is a wasteful number, since it uses less digits than its factorization.

420205233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17301 (or 17294 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 420205233 is about 20498.9080928717. The cubic root of 420205233 is about 749.0092001083.

Adding to 420205233 its reverse (332502024), we get a palindrome (752707257).

The spelling of 420205233 in words is "four hundred twenty million, two hundred five thousand, two hundred thirty-three".