423404344021 has 8 divisors (see below), whose sum is σ = 445881684800. Its totient is φ = 400946293440.

The previous prime is 423404344001. The next prime is 423404344039. The reversal of 423404344021 is 120443404324.

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 423404344021 - 2³¹ = 421256860373 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 (423404344001) 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, 4777476 + ... + 4865293.

It is an arithmetic number, because the mean of its divisors is an integer number (55735210600).

Almost surely, 2^423404344021 is an apocalyptic number.

It is an amenable number.

423404344021 is a deficient number, since it is larger than the sum of its proper divisors (22477340779).

423404344021 is a wasteful number, since it uses less digits than its factorization.

423404344021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9645099.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 423404344021 its reverse (120443404324), we get a palindrome (543847748345).

The spelling of 423404344021 in words is "four hundred twenty-three billion, four hundred four million, three hundred forty-four thousand, twenty-one".