423042234021 has 24 divisors (see below), whose sum is σ = 666850263456. Its totient is φ = 256297595040.

The previous prime is 423042234011. The next prime is 423042234037. The reversal of 423042234021 is 120432240324.

423042234021 is a `hidden beast` number, since 4 + 2 + 30 + 4 + 223 + 402 + 1 = 666.

It is not a de Polignac number, because 423042234021 - 2¹⁰ = 423042232997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423042234011) 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, 484750 + ... + 1039743.

It is an arithmetic number, because the mean of its divisors is an integer number (27785427644).

Almost surely, 2^423042234021 is an apocalyptic number.

It is an amenable number.

423042234021 is a deficient number, since it is larger than the sum of its proper divisors (243808029435).

423042234021 is a wasteful number, since it uses less digits than its factorization.

423042234021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527313 (or 1527310 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 423042234021 its reverse (120432240324), we get a palindrome (543474474345).

The spelling of 423042234021 in words is "four hundred twenty-three billion, forty-two million, two hundred thirty-four thousand, twenty-one".