420121233 has 24 divisors (see below), whose sum is σ = 694075200. Its totient is φ = 239881824.

The previous prime is 420121171. The next prime is 420121249. The reversal of 420121233 is 332121024.

420121233 is a `hidden beast` number, since 420 + 1 + 212 + 33 = 666.

It is not a de Polignac number, because 420121233 - 2⁹ = 420120721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420121283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141478 + ... + 144416.

It is an arithmetic number, because the mean of its divisors is an integer number (28919800).

Almost surely, 2^420121233 is an apocalyptic number.

It is an amenable number.

420121233 is a deficient number, since it is larger than the sum of its proper divisors (273953967).

420121233 is a wasteful number, since it uses less digits than its factorization.

420121233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221 (or 5218 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 420121233 is about 20496.8591008476. The cubic root of 420121233 is about 748.9592872238.

Adding to 420121233 its reverse (332121024), we get a palindrome (752242257).

The spelling of 420121233 in words is "four hundred twenty million, one hundred twenty-one thousand, two hundred thirty-three".