423343144021 has 8 divisors (see below), whose sum is σ = 500504209920. Its totient is φ = 350352946608.

The previous prime is 423343144009. The next prime is 423343144067. The reversal of 423343144021 is 120441343324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423343144021 - 2⁵ = 423343143989 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 (423343144921) 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, 1042716901 + ... + 1042717306.

It is an arithmetic number, because the mean of its divisors is an integer number (62563026240).

Almost surely, 2^423343144021 is an apocalyptic number.

It is an amenable number.

423343144021 is a deficient number, since it is larger than the sum of its proper divisors (77161065899).

423343144021 is a wasteful number, since it uses less digits than its factorization.

423343144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085434243.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 423343144021 its reverse (120441343324), we get a palindrome (543784487345).

The spelling of 423343144021 in words is "four hundred twenty-three billion, three hundred forty-three million, one hundred forty-four thousand, twenty-one".