423240330434020 has 96 divisors (see below), whose sum is σ = 978755144605056. Its totient is φ = 152453449497600.

The previous prime is 423240330433957. The next prime is 423240330434111. The reversal of 423240330434020 is 20434033042324.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261924474 + ... + 263535406.

It is an arithmetic number, because the mean of its divisors is an integer number (10195366089636).

Almost surely, 2^{423240330434020} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423240330434020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489377572302528).

423240330434020 is an abundant number, since it is smaller than the sum of its proper divisors (555514814171036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423240330434020 is a wasteful number, since it uses less digits than its factorization.

423240330434020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622221 (or 1622219 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 34.

Adding to 423240330434020 its reverse (20434033042324), we get a palindrome (443674363476344).

The spelling of 423240330434020 in words is "four hundred twenty-three trillion, two hundred forty billion, three hundred thirty million, four hundred thirty-four thousand, twenty".